Comment 5 for bug 1691524

Ok so the root cause of this (thanks to mandre for helping work through this) is we set DockerNamespaceIsRegistry to false in this environment (which is the default in the templates anyway), which if (like me) you specify the environments in an unfortunate order, the quickstart generated environment setting gets overwritten by the docker.yaml.

https://github.com/openstack/tripleo-heat-templates/blob/master/environments/docker.yaml#L57

Since this is just duplicating the template defaults, we should probably remove them from docker.yaml I think.