Fix for WFCORE-1902. More informative batch error

[jfdenise]

Compose an error message that contains the operation(s) that is(are) causing the exception.
Added unit test.

[wildfly-ci]

Windows Build 4131 outcome was FAILURE using a merge of 2c5dbcb
Summary: Tests failed: 1 (1 new), passed: 3789, ignored: 89 Build time: 00:56:59

Failed tests

org.jboss.as.controller.test.TransactionalProtocolClientTestCase.testCancelBeforePrepared: java.net.BindException: Address already in use: bind
    at sun.nio.ch.Net.bind0(Native Method)
    at sun.nio.ch.Net.bind(Net.java:433)
    at sun.nio.ch.Net.bind(Net.java:425)
    at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
    at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
    at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:67)
    at org.xnio.nio.NioXnioWorker.createTcpConnectionServer(NioXnioWorker.java:192)
    at org.xnio.XnioWorker.createStreamConnectionServer(XnioWorker.java:243)
    at org.jboss.remoting3.remote.RemoteConnectionProvider$ProviderInterface.createServer(RemoteConnectionProvider.java:348)
    at org.jboss.as.controller.support.ChannelServer.create(ChannelServer.java:92)
    at org.jboss.as.controller.test.TransactionalProtocolClientTestCase.startChannelServer(TransactionalProtocolClientTestCase.java:108)java.lang.NullPointerException: null
    at org.jboss.as.controller.test.TransactionalProtocolClientTestCase.stopChannels(TransactionalProtocolClientTestCase.java:142)