This is should be working when the openshift-ansible being used has this commit: https://github.com/openshift/openshift-ansible/pull/6536
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-2018:0489