Hit same issue when use openshift-ansible-3.10.27-1.git.0.d5723a3.el7.noarch.rpm and ansible-2.6.
https://github.com/openshift/openshift-ansible/pull/9177
The fix work well with openshift-ansible:v3.10.34
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-2018:2376