Cleanup is not done properly after test have finished

There are several tests failing because cleanup process was not done properly.
This can be caused by ibmjdk1.8 that do not run test in different order. Therefore problem is shown.

two exceptions:

https://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/eap-7x-tcpgossip-maven-rhel/lastCompletedBuild/jdk=ibm1.8,label_exp=EAP-RHEL7%20&&%20eap-sustaining/testReport/org.jboss.as.test.clustering.extended.ejb2.stateful.remote.failover/RemoteEJBClientStatefulBeanFailoverTestCase%28SYNC-tcp-extended%29/testFailoverFromRemoteClientWhenOneNodeGoesDown/

https://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/eap-7x-tcpgossip-maven-rhel/lastCompletedBuild/jdk=ibm1.8,label_exp=EAP-RHEL7%20&&%20eap-sustaining/testReport/org.jboss.as.test.clustering.extended.ejb2.stateless/RemoteStatelessFailoverTestCase%28SYNC-tcp-extended%29/testFailoverOnUndeploySpecifiedByDescriptor/

whole run:
https://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/eap-7x-tcpgossip-maven-rhel/3/testReport/