install.yml does not create /etc/systemd/system/atomic-openshift-node.service. That file is created via config.yml, which is called after registry_auth.yml.
I believe the ordering should be correct. I will need the full ansible output if this problem persists.
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/RHSA-2017:3188