I backported the change upstream: https://review.openstack.org/#/c/582542/
Oslo Messaging 5.30.4 has been released with the fix.
The python-oslo-messaging-5.30.4-1.el7ost package is now ready for QA.
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. https://access.redhat.com/errata/RHBA-2018:3790