Comment 1 for bug 1714270

Reviewed: https://review.openstack.org/499424
Committed: https://git.openstack.org/cgit/openstack/python-tripleoclient/commit/?id=0bd00bba4a99493aef01d272f380d1b359bd5d9e
Submitter: Jenkins
Branch: stable/pike

commit 0bd00bba4a99493aef01d272f380d1b359bd5d9e
Author: Steve Baker <email address hidden>
Date: Fri Jul 14 12:03:53 2017 +1200

    Filter container images by deployed services

    This change adds the --service-environment-file/-e argument to the
    prepare command which will take heat environment files that specify
    which services are containerised.

    When specified, the resulting image entries will be filtered only by
    the containerised services discovered in the environment.

    -e is used as the short argument so that tools like quickstart can use
    the same variable to specify these environments for both the prepare
    command and the overcloud deploy command.

    Once this change merges, any calls to prepare in CI can be modified to
    reduce the number of images being transferred for 'upload' calls. For
    example, specifying -e environment/docker.yaml will reduce image
    transfers from 85 to 44.

    (cherry picked from commit 9ff9b7c663b9e63b17b62f3aa9fe48a4dfd5b407)
                    and commit cd1eb1e111779a0a335c7e28f521acc0eb18dae3)
    Change-Id: I35866fb24915ef80b86cc402015afb08cb155dcf
    Partial-Bug: #1710992
    Partial-Bug: #1714270
    Depends-On: #Ie8801b11921c46923b0f7c9aaba6bf524c464e82