Fix for WFCORE-1695, echo command, variable completion.

[jfdenise]

Reworked echo command variable completion. Any variable located in the line to echo is completed.
Added unit test.

[wildfly-ci]

Full integration - Windows Build 2442 outcome was FAILURE using a merge of 1671791
Summary: Tests failed: 1 (1 new), passed: 3609, ignored: 112 Build time: 01:25:54

Failed tests

org.jboss.as.test.clustering.cluster.singleton.SingletonPolicyServiceTestCase(SYNC-tcp).testSingletonService: 	at org.jboss.as.test.clustering.cluster.singleton.SingletonPolicyServiceTestCase.testSingletonService(SingletonPolicyServiceTestCase.java:150)
------- Stdout: -------
12:02:13,891 INFO  [org.jboss.as.repository] (management-handler-thread - 2) WFLYDR0001: Content added at location C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\clustering\target\wildfly-SYNC-tcp-0\standalone\data\content\8b\2b89401b5adc9ba9984d4468290a76f50efe3d\content
12:02:13,894 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-3) WFLYSRV0027: Starting deployment of "singleton.war" (runtime-name: "singleton.war")
12:02:13,928 WARN  [org.jboss.as.dependency.private] (MSC service thread 1-1) WFLYSRV0018: Deployment "deployment.singleton.war" is using a private module ("org.jboss.as.server:main") which may be changed or removed in future versions without notice.
12:02:13,968 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 80) WFLYCLINF0002: Started default cache from server container
12:02:13,973 INFO  [org.wildfly.clustering.server] (DistributedSingletonService - 1) WFLYCLSV0003: node-0 elected as the singleton provider of the jboss.test.service.default-policy service
12:02:13,975 INFO  [org.wildfly.clustering.server] (DistributedSingletonService - 1) WFLYCLSV0001: This node will now operate as the singleton provider of the jboss.test.service.default-policy service
12:02:13,976 INFO  [org.wildfly.extension.undertow] (ServerService Thread Pool -- 84) WFLYUT0021: Registered web context: '/singleton' for server 'default-server'
12:02:13,988 INFO  [org.jboss.as.server] (management-handler-thread - 2) WFLYSRV0010: Deployed "singleton.war" (runtime-name : "singleton.war")
12:02:14,007 INFO  [org.jboss.as.repository] (management-handler-thread - 4) WFLYDR0001: Content added at location C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\clustering\target\wildfly-SYNC-tcp-1\standalone\data\content\c8\6f18280d9aef943b1ccbcbeaa452cff22ecce7\content
12:02:14,010 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-1) WFLYSRV0027: Starting deployment of "singleton.war" (runtime-name: "singleton.war")
12:02:14,050 WARN  [org.jboss.as.dependency.private] (MSC service thread 1-5) WFLYSRV0018: Deployment "deployment.singleton.war" is using a private module ("org.jboss.as.server:main") which may be changed or removed in future versions without notice.
12:02:14,086 INFO  [org.infinispan.CLUSTER] (ServerService Thread Pool -- 81) ISPN000310: Starting cluster-wide rebalance for cache default, topology CacheTopology{id=2, rebalanceId=2, currentCH=ReplicatedConsistentHash{ns = 256, owners = (1)[node-0: 256]}, pendingCH=ReplicatedConsistentHash{ns = 256, owners = (2)[node-0: 134, node-1: 122]}, unionCH=null, actualMembers=[node-0, node-1]}
12:02:14,087 INFO  [org.infinispan.CLUSTER] (ServerService Thread Pool -- 81) [Context=default][Scope=node-1]ISPN100002: Started local rebalance
12:02:14,110 INFO  [org.infinispan.CLUSTER] (remote-thread--p11-t2) [Context=default][Scope=node-0]ISPN100003: Finished local rebalance
12:02:14,111 INFO  [org.wildfly.extension.undertow] (ServerService Thread Pool -- 80) WFLYUT0021: Registered web context: '/singleton' for server 'default-server'
12:02:14,124 INFO  [org.infinispan.CLUSTER] (transport-thread--p15-t25) [Context=default][Scope=node-1]ISPN100003: Finished local rebalance
12:02:14,126 INFO  [org.infinispan.CLUSTER] (transport-thread--p15-t25) ISPN000336: Finished cluster-wide rebalance for cache default, topology id = 2
12:02:14,127 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 81) WFLYCLINF0002: Started default cache from server container
12:02:14,149 INFO  [org.wildfly.clustering.server] (DistributedSingletonService - 1) WFLYCLSV0003: node-0 elected as the singleton provider of the jboss.test.service.default-policy service
12:02:14,162 INFO  [org.jboss.as.server] (management-handler-thread - 4) WFLYSRV0010: Deployed "singleton.war" (runtime-name : "singleton.war")
12:02:14,198 INFO  [org.jboss.as.server] (management-handler-thread - 3) WFLYSRV0236: Suspending server with no timeout.
12:02:14,202 INFO  [org.jboss.as.server] (Management Triggered Shutdown) WFLYSRV0241: Shutting down in response to management operation 'shutdown'
12:02:14,215 INFO  [org.wildfly.extension.undertow] (ServerService Thread Pool -- 81) WFLYUT0022: Unregistered web context: '/singleton' from server 'default-server'
12:02:14,221 WARN  [org.jboss.msc.service.fail] (MSC service thread 1-2) MSC000004: Failure during stop of service jboss.messaging-activemq.http-upgrade-service.http-acceptor-throughput.legacy: java.lang.UnsupportedOperationException
	at java.util.concurrent.CopyOnWriteArrayList$COWIterator.remove(CopyOnWriteArrayList.java:1176)
	at io.undertow.server.handlers.ChannelUpgradeHandler.removeProtocol(ChannelUpgradeHandler.java:160)
	at org.wildfly.extension.messaging.activemq.HTTPUpgradeService.stop(HTTPUpgradeService.java:177)
	at org.jboss.msc.service.ServiceControllerImpl$StopTask.stopService(ServiceControllerImpl.java:2071)
	at org.jboss.msc.service.ServiceControllerImpl$StopTask.run(ServiceControllerImpl.java:2032)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)

12:02:14,223 WARN  [org.jboss.msc.service.fail] (MSC service thread 1-5) MSC000004: Failure during stop of service jboss.messaging-activemq.http-upgrade-service.http-acceptor-throughput: java.lang.UnsupportedOperationException
	at java.util.concurrent.CopyOnWriteArrayList$COWIterator.remove(CopyOnWriteArrayList.java:1176)
	at io.undertow.server.handlers.ChannelUpgradeHandler.removeProtocol(ChannelUpgradeHandler.java:160)
	at org.wildfly.extension.messaging.activemq.HTTPUpgradeService.stop(HTTPUpgradeService.java:177)
	at org.jboss.msc.service.ServiceControllerImpl$StopTask.stopService(ServiceControllerImpl.java:2071)
	at org.jboss.msc.service.ServiceControllerImpl$StopTask.run(ServiceControllerImpl.java:2032)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)

12:02:14,224 WARN  [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC000004: Failure during stop of service jboss.messaging-activemq.http-upgrade-service.http-acceptor: java.lang.UnsupportedOperationException
	at java.util.concurrent.CopyOnWriteArrayList$COWIterator.remove(CopyOnWriteArrayList.java:1176)
	at io.undertow.server.handlers.ChannelUpgradeHandler.removeProtocol(ChannelUpgradeHandler.java:160)
	at org.wildfly.extension.messaging.activemq.HTTPUpgradeService.stop(HTTPUpgradeService.java:177)
	at org.jboss.msc.service.ServiceControllerImpl$StopTask.stopService(ServiceControllerImpl.java:2071)
	at org.jboss.msc.service.ServiceControllerImpl$StopTask.run(ServiceControllerImpl.java:2032)

[wildfly-ci]

Full integration - Windows Build 2446 outcome was FAILURE using a merge of 1671791
Summary: Tests failed: 1 (1 new), passed: 3606, ignored: 112 Build time: 01:30:43

Failed tests

org.jboss.as.test.iiopssl.basic.IIOPSslInvocationTestCase: 	at org.jboss.as.arquillian.container.ArchiveDeployer.deployInternal(ArchiveDeployer.java:141)
	at org.jboss.as.arquillian.container.ArchiveDeployer.deployInternal(ArchiveDeployer.java:121)
	at org.jboss.as.arquillian.container.ArchiveDeployer.deploy(ArchiveDeployer.java:83)
	at org.jboss.as.arquillian.container.CommonDeployableContainer.deploy(CommonDeployableContainer.java:236)
Caused by: java.lang.Exception: {"WFLYCTL0180: Services with missing/unavailable dependencies" => undefined}
	at org.jboss.as.controller.client.helpers.standalone.impl.ServerDeploymentPlanResultFuture.getActionResult(ServerDeploymentPlanResultFuture.java:134)
	at org.jboss.as.controller.client.helpers.standalone.impl.ServerDeploymentPlanResultFuture.getResultFromNode(ServerDeploymentPlanResultFuture.java:123)
	at org.jboss.as.controller.client.helpers.standalone.impl.ServerDeploymentPlanResultFuture.get(ServerDeploymentPlanResultFuture.java:85)
	at org.jboss.as.controller.client.helpers.standalone.impl.ServerDeploymentPlanResultFuture.get(ServerDeploymentPlanResultFuture.java:42)
	at org.jboss.as.controller.client.helpers.standalone.ServerDeploymentHelper.deploy(ServerDeploymentHelper.java:55)
	at org.jboss.as.arquillian.container.ArchiveDeployer.deployInternal(ArchiveDeployer.java:135)
	at org.jboss.as.arquillian.container.ArchiveDeployer.deployInternal(ArchiveDeployer.java:121)
	at org.jboss.as.arquillian.container.ArchiveDeployer.deploy(ArchiveDeployer.java:83)
	at org.jboss.as.arquillian.container.CommonDeployableContainer.deploy(CommonDeployableContainer.java:236)
------- Stdout: -------
14:58:11,425 DEBUG [org.jboss.logging] (main) Logging Provider: org.jboss.logging.JBossLogManagerProvider
14:58:13,282 WARNING [org.jboss.as.arquillian.container.managed.ManagedDeployableContainer] (main) Bundles path is deprecated and no longer used.
14:58:13,290 INFO  [org.jboss.as.arquillian.container.managed.ManagedDeployableContainer] (main) Starting container with: [C:\opt\java\jdk1.8.0_92\bin\java, -D[Standalone], -Dorg.jboss.ejb.client.wildfly-testsuite-hack=true, -Xmx512m, -XX:MetaspaceSize=128m, -Djboss.dist=C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop/../../../dist/target/wildfly-11.0.0.Alpha1-SNAPSHOT, -Djava.net.preferIPv4Stack=false, -Djava.net.preferIPv6Addresses=true, -server, -Dts.timeout.factor=100, -Dnode0=::1, -Dnode1=::1, -Dmcast=ff13::1, -Dmcast.ttl=0, -Djbossas.ts.submodule.dir=C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop, -Djbossas.ts.integ.dir=C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop/.., -Djbossas.ts.dir=C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop/../.., -Djbossas.project.dir=C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop/../../.., -Djava.io.tmpdir=C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop/target, -Djboss.inst=C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop/target/jbossas-iiop-ssl-client, -ea, -Djboss.home.dir=C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop\target\jbossas-iiop-ssl-client, -Dorg.jboss.boot.log.file=C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop\target\jbossas-iiop-ssl-client\standalone\log\server.log, -Dlogging.configuration=file:C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop\target\jbossas-iiop-ssl-client\standalone\configuration\logging.properties, -jar, C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop\target\jbossas-iiop-ssl-client\jboss-modules.jar, -mp, C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop\target\jbossas-iiop-ssl-client\modules;C:\BuildAgent\work\5768cf3a0bee5b47\full\dist\target\wildfly-11.0.0.Alpha1-SNAPSHOT\modules;C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop\target\modules, org.jboss.as.standalone, -Djboss.home.dir=C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop\target\jbossas-iiop-ssl-client, -Djboss.server.base.dir=C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop\target\jbossas-iiop-ssl-client\standalone, -Djboss.server.log.dir=C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop\target\jbossas-iiop-ssl-client\standalone\log, -Djboss.server.config.dir=C:\BuildAgent\work\5768cf3a0bee5b47\full\testsuite\integration\iiop\target\jbossas-iiop-ssl-client\standalone\configuration, -c=standalone-full.xml]
14:58:13,562 INFO  [org.jboss.remoting] (main) JBoss Remoting version 5.0.0.Beta12
14:58:13,586 INFO  [org.xnio] (main) XNIO version 3.4.1.Final
14:58:13,612 INFO  [org.xnio.nio] (main) XNIO NIO Implementation Version 3.4.1.Final
14:58:13,702 DEBUG [org.xnio.nio] (Remoting (anonymous) I/O-1) Started channel thread 'Remoting (anonymous) I/O-1', selector sun.nio.ch.WindowsSelectorImpl@ce824f
14:58:13,702 DEBUG [org.xnio.nio] (Remoting (anonymous) Accept) Started channel thread 'Remoting (anonymous) Accept', selector sun.nio.ch.WindowsSelectorImpl@173d6b7
14:58:13,742 INFO  [org.wildfly.security] (main) ELY00001: WildFly Elytron version 1.1.0.Beta17
14:58:13,786 DEBUG [org.xnio.nio] (Remoting "management-client" I/O-1) Started channel thread 'Remoting "management-client" I/O-1', selector sun.nio.ch.WindowsSelectorImpl@fbc8d7
14:58:13,786 DEBUG [org.xnio.nio] (Remoting "management-client" Accept) Started channel thread 'Remoting "management-client" Accept', selector sun.nio.ch.WindowsSelectorImpl@11fcc30
14:58:13,909 INFO  [org.jboss.modules] (main) JBoss Modules version 1.6.0.Beta3
14:58:14,414 INFO  [org.jboss.msc] (main) JBoss MSC version 1.2.7.Final
14:58:14,725 INFO  [org.jboss.as] (MSC service thread 1-7) WFLYSRV0049: WildFly Full 11.0.0.Alpha1-SNAPSHOT (WildFly Core 3.0.0.Alpha16-SNAPSHOT) starting
14:58:14,913 INFO  [org.jboss.as.domain.management] (MSC service thread 1-1) WFLYDM0136: Registered OpenSSL provider
14:58:16,099 INFO  [org.jboss.as.controller.management-deprecated] (Controller Boot Thread) WFLYCTL0028: Attribute 'security-realm' in the resource at address '/core-service=management/management-interface=http-interface' is deprecated, and may be removed in future version. See the attribute description in the output of the read-resource-description operation to learn more about the deprecation.
14:58:16,202 INFO  [org.jboss.as.controller.management-deprecated] (ServerService Thread Pool -- 9) WFLYCTL0028: Attribute 'security-realm' in the resource at address '/subsystem=undertow/server=default-server/https-listener=https' is deprecated, and may be removed in future version. See the attribute description in the output of the read-resource-description operation to learn more about the deprecation.
14:58:16,277 INFO  [org.jboss.as.server] (Controller Boot Thread) WFLYSRV0039: Creating http management service using socket-binding (management-http)
14:58:16,306 INFO  [org.xnio] (MSC service thread 1-3) XNIO version 3.4.1.Final
14:58:16,314 INFO  [org.xnio.nio] (MSC service thread 1-3) XNIO NIO Implementation Version 3.4.1.Final
14:58:16,333 INFO  [org.wildfly.extension.io] (ServerService Thread Pool -- 40) WFLYIO001: Worker 'default' has auto-configured to 8 core threads with 64 task threads based on your 4 available processors
14:58:16,338 WARN  [org.jboss.as.txn] (ServerService Thread Pool -- 60) WFLYTX0013: Node identifier property is set to the default value. Please make sure it is unique.
14:58:16,346 INFO  [org.jboss.as.naming] (ServerService Thread Pool -- 52) WFLYNAM0001: Activating Naming Subsystem
14:58:16,353 INFO  [org.jboss.as.jsf] (ServerService Thread Pool -- 48) WFLYJSF0007: Activated the following JSF Implementations: [main]
14:58:16,359 INFO  [org.jboss.as.naming] (MSC service thread 1-8) WFLYNAM0003: Starting Naming Service
14:58:16,360 INFO  [org.jboss.as.clustering.infinispan] (ServerService Thread Pool -- 41) WFLYCLINF0001: Activating Infinispan subsystem.
14:58:16,385 INFO  [org.jboss.as.connector.subsystems.datasources] (ServerService Thread Pool -- 36) WFLYJCA0004: Deploying JDBC-compliant driver class org.h2.Driver (version 1.3)
14:58:16,392 INFO  [org.wildfly.iiop.openjdk] (ServerService Thread Pool -- 42) WFLYIIOP0001: Activating IIOP Subsystem
14:58:16,397 INFO  [org.jboss.as.connector.deployers.jdbc] (MSC service thread 1-7) WFLYJCA0018: Started Driver service with driver-name = h2
14:58:16,393 INFO  [org.jboss.as.connector] (MSC service thread 1-8) WFLYJCA0009: Starting JCA Subsystem (WildFly/IronJacamar 1.4.0.Final)
14:58:16,437 INFO  [org.jboss.as.security] (ServerService Thread Pool -- 59) WFLYSEC0002: Activating Security Subsystem
14:58:16,445 INFO  [org.jboss.as.security] (MSC service thread 1-7) WFLYSEC0001: Current PicketBox version=5.0.0.Alpha3
14:58:16,459 INFO  [org.jboss.as.webservices] (ServerService Thread Pool -- 62) WFLYWS0002: Activating WebServices Extension
14:58:16,495 INFO  [org.wildfly.extension.undertow] (MSC service thread 1-5) WFLYUT0003: Undertow 1.4.7.Final starting
14:58:16,504 INFO  [org.jboss.as.mail.extension] (MSC service thread 1-7) WFLYMAIL0001: Bound mail session [java:jboss/mail/Default]
14:58:16,505 INFO  [org.jboss.remoting] (MSC service thread 1-3) JBoss Remoting version 5.0.0.Beta12