This has been fixed in OSP11 with this patch: https://github.com/openstack/puppet-horizon/commit/5211ba5fc8652fbf6b3a7d72ed3de273d43d29ee
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-2017:2654