- Zuul updated ansible to 2.7, no longer uses missing variables.
- Using an if to try and address.
- Fixes a few formatting problems that are causing the gates to fail
Docker fix based on Aaron Sheffield's PS for Pegleg:
https://review.openstack.org/#/c/645631/
Change-Id: I14e8f3aac0af7a3abc4e2b6c4ece292a24bc4c6a