[ARIES-1078] JPA container stops locating providers for managers (PUs) when one provider is found

Patch applied on behalf of Kurt Westerfeld with many thanks!
Pull request #4 can be closed.


git-svn-id: https://svn.apache.org/repos/asf/aries/trunk@1583244 13f79535-47bb-0310-9956-ffa450edef68