Comment 9 for bug 1696598

Reviewed: https://review.openstack.org/475975
Committed: https://git.openstack.org/cgit/openstack/tripleo-quickstart-extras/commit/?id=90e703768326622eab1cf8dfa80daddccc3f88c8
Submitter: Jenkins
Branch: master

commit 90e703768326622eab1cf8dfa80daddccc3f88c8
Author: Steve Baker <email address hidden>
Date: Wed Jun 21 13:24:41 2017 +1200

    Use prepare command for overcloud_containers.yaml

    Most deployments will not be able to use the packaged
    overcloud_containers.yaml unmodified, so the prepare command will
    allow local modified files to be created.

    Once nothing in CI consumes the packaged overcloud_containers.yaml, it
    will be deleted.

    This change also used the --env-file option to generate
    container-default-parameters.yaml instead of the current templated
    approach. There is about to be some disruption to how the namespace is
    represented in the image parameters, so using the prepare command will
    help mitigate that.

    Change-Id: I6a5796428c224584359b2a434d7fc80878d5f038
    Partial-Bug: #1696598