Fix StatelessInstanceManagerPoolingTest - ConcurrentAccessTimeoutException
Pool - Unhandled ex handler.
StatelessContainer - Synchronization

git-svn-id: https://svn.apache.org/repos/asf/tomee/tomee/trunk@1612261 13f79535-47bb-0310-9956-ffa450edef68
No faith in merge!

git-svn-id: https://svn.apache.org/repos/asf/tomee/tomee/trunk@1612263 13f79535-47bb-0310-9956-ffa450edef68