JERSEY-2122: Ability to register EJB beans from EJB libs as JAX-RS resources in multi module Java EE apps
 - added multi-module ear test application, that checks EJB/JAX-RS bidirectional injection
 - incorporated review feedback
 - filed JERSEY-2411 to fix this in WLS as well

Change-Id: I73b297e9ec4412900796863ff0dee98912f1dd46
Signed-off-by: Jakub Podlesak <jakub.podlesak@oracle.com>