[BZ-1022460] Intermittent failure of extended ejb2 tests due to arquillian configuration exception

Conflicts:
	testsuite/integration/clust/pom.xml
Merge pull request #6148 from rhusar/bz1022460

[BZ-1022460] Intermittent failure of extended ejb2 tests due to arquilli...

Merging, although more work is needed. What is here is enough for the downstream PR which has not had the refactoring causing the need for WFLY-3248
Next is 8.1.0.Final