Red Hat Bugzilla – 1594763 – [OSP13][Deployment][undercloud] notification_format in nova.conf should be set to unversioned as there is no consumer for versioned
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-2018:2574