ISPN-4567 Add arquillian debug for AS Client modules tests

https://issues.jboss.org/browse/ISPN-4567

* This is done to get more information out of the arquillian lifecycle events for when this issue appears again.
I think you would need to set it in MAVEN_FORK_OPTS, so that it's set in the surefire child process. I'll just integrate it for now.