Replace bitronix and eclipselink in persistence

Replace bitronix and eclipselink in persistence

Replaced bitronix transaction manager, which is not intended for production,
with jboss transaction manager.
Eliminated eclipselink so that only hibernate is used for
persistence for both JPA and drools-persistence.
Added more test cases to EntityMgrTrans to provide coverage for
various exception types.
Moved object store to features/session-persistence/jta.
Wrapped RuntimeException in specific type.
Modified test to throw specific exception type.
Converted GenSchema from an @Test to a main().
Logged caught exceptions in junit tests.

Change-Id: I4b02efc8da43d20b2dbb3c0b25adc382e80474ec
Issue-ID: POLICY-191
Signed-off-by: Jim Hahn <jrh3@att.com>