Now node image is being prepulled before install, PR https://github.com/openshift/openshift-ansible/pull/8172. Could you verify it still throws errors on openshift-ansible-3.10.0-0.51.0?
Verified this bug with openshift-ansible-3.10.0-0.51.0, and PASS.
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-2018:1816