Upgrade to Netty 4.1.7

This commit upgrades the Netty dependency to version 4.1.7.Final,
picking up some important bug fixes.

client/transport/src/test/java/org/elasticsearch/transport/client/PreBuiltTransportClientTests.java

@@ -41,8 +41,6 @@ public class PreBuiltTransportClientTests extends RandomizedTest {
 
     @Test
     public void testPluginInstalled() {
-        // TODO: remove when Netty 4.1.6 is upgraded to Netty 4.1.7 including https://github.com/netty/netty/pull/6068
-        assumeFalse(Constants.JRE_IS_MINIMUM_JAVA9);
         try (TransportClient client = new PreBuiltTransportClient(Settings.EMPTY)) {
             Settings settings = client.settings();
             assertEquals(Netty4Plugin.NETTY_TRANSPORT_NAME, NetworkModule.HTTP_DEFAULT_TYPE_SETTING.get(settings));

modules/transport-netty4/build.gradle

@@ -33,13 +33,13 @@ compileTestJava.options.compilerArgs << "-Xlint:-cast,-deprecation,-rawtypes,-tr
 
 dependencies {
     // network stack
-    compile "io.netty:netty-buffer:4.1.6.Final"
-    compile "io.netty:netty-codec:4.1.6.Final"
-    compile "io.netty:netty-codec-http:4.1.6.Final"
-    compile "io.netty:netty-common:4.1.6.Final"
-    compile "io.netty:netty-handler:4.1.6.Final"
-    compile "io.netty:netty-resolver:4.1.6.Final"
-    compile "io.netty:netty-transport:4.1.6.Final"
+    compile "io.netty:netty-buffer:4.1.7.Final"
+    compile "io.netty:netty-codec:4.1.7.Final"
+    compile "io.netty:netty-codec-http:4.1.7.Final"
+    compile "io.netty:netty-common:4.1.7.Final"
+    compile "io.netty:netty-handler:4.1.7.Final"
+    compile "io.netty:netty-resolver:4.1.7.Final"
+    compile "io.netty:netty-transport:4.1.7.Final"
 }
 
 thirdPartyAudit.excludes = [
@@ -131,9 +131,6 @@ thirdPartyAudit.excludes = [
         'io.netty.util.internal.PlatformDependent0',
         'io.netty.util.internal.PlatformDependent0$2',
         'io.netty.util.internal.PlatformDependent0$3',
-        'io.netty.util.internal.UnsafeAtomicIntegerFieldUpdater',
-        'io.netty.util.internal.UnsafeAtomicLongFieldUpdater',
-        'io.netty.util.internal.UnsafeAtomicReferenceFieldUpdater',
         'io.netty.util.internal.chmv8.ConcurrentHashMapV8',
         'io.netty.util.internal.chmv8.ConcurrentHashMapV8$1',
         'io.netty.util.internal.chmv8.ConcurrentHashMapV8$TreeBin',

modules/transport-netty4/licenses/netty-buffer-4.1.7.Final.jar.sha1

@@ -0,0 +1 @@
+65e89b4d0737cf1ed3eac2916ebf365f5312294c

modules/transport-netty4/licenses/netty-codec-4.1.7.Final.jar.sha1

@@ -0,0 +1 @@
+b3ecd69e7ab0eb2054b26ad3efb13c34204ffe19

modules/transport-netty4/licenses/netty-codec-http-4.1.7.Final.jar.sha1

@@ -0,0 +1 @@
+9f957998c651e7b73d6dc878f704d81b4c085387

modules/transport-netty4/licenses/netty-common-4.1.7.Final.jar.sha1

@@ -0,0 +1 @@
+06766071efa0426fb33101d1758a8d0e09d16ac7

modules/transport-netty4/licenses/netty-handler-4.1.7.Final.jar.sha1

@@ -0,0 +1 @@
+6f7dfa01c1af4280c154213b6d548405df352df9

modules/transport-netty4/licenses/netty-resolver-4.1.7.Final.jar.sha1

@@ -0,0 +1 @@
+077734f94029b47887f6f9392d1fc62729e155aa

modules/transport-netty4/licenses/netty-transport-4.1.7.Final.jar.sha1

@@ -0,0 +1 @@
+469e86d4dda1dca8b88d2b1faa8e0f078243ba12

modules/transport-netty4/src/main/plugin-metadata/plugin-security.policy

@@ -17,12 +17,12 @@
  * under the License.
  */
 
-grant codeBase "${codebase.netty-common-4.1.6.Final.jar}" {
+grant codeBase "${codebase.netty-common-4.1.7.Final.jar}" {
    // for reading the system-wide configuration for the backlog of established sockets
    permission java.io.FilePermission "/proc/sys/net/core/somaxconn", "read";
 };
 
-grant codeBase "${codebase.netty-transport-4.1.6.Final.jar}" {
+grant codeBase "${codebase.netty-transport-4.1.7.Final.jar}" {
    // Netty NioEventLoop wants to change this, because of https://bugs.openjdk.java.net/browse/JDK-6427854
    // the bug says it only happened rarely, and that its fixed, but apparently it still happens rarely!
    permission java.util.PropertyPermission "sun.nio.ch.bugLevel", "write";