Comment 7 for bug 1691524

Reviewed: https://review.openstack.org/465910
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=47dfa57f5cc8a96cf0682eec226d68908819cc75
Submitter: Jenkins
Branch: master

commit 47dfa57f5cc8a96cf0682eec226d68908819cc75
Author: Steven Hardy <email address hidden>
Date: Thu May 18 10:53:10 2017 +0100

    Comment parameters for registry in docker.yaml

    These duplicate the defaults in puppet/services/docker.yaml and
    break things if you include an environment file (e.g that generated
    by quickstart containers-default-parameters.yaml) before the
    docker.yaml.

    Instead it's probably more helpful to include the commented lines
    showing how to enable use of a local docker registry.

    Change-Id: I3896fa2ea7caa603186f0af04f6d8382d50dd97a
    Closes-Bug: #1691524