This needs to go out asap, MRG2 update has been released http://rhn.redhat.com/errata/RHBA-2014-0804.html which requires routing key to be specified in the address for a direct producer
Adding link to Ceilometer stable/havana backport.
I performed a fast sanity here and tried to create an x509 certificate with nova. Everything seems to be fine. Tested with python-qpid 18-12.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHSA-2014-1050.html