missing beans.xml

git-svn-id: https://svn.apache.org/repos/asf/tomee/tomee/trunk@1478279 13f79535-47bb-0310-9956-ffa450edef68
added an assert error message to help to identify the problem with the "Pool" tests.

git-svn-id: https://svn.apache.org/repos/asf/tomee/tomee/trunk@1478804 13f79535-47bb-0310-9956-ffa450edef68