Comment 7 for bug 1715557

Reviewed: https://review.openstack.org/509707
Committed: https://git.openstack.org/cgit/openstack/tripleo-common/commit/?id=0a3d617590e31b5c7200203111219a45f2651b70
Submitter: Jenkins
Branch: stable/pike

commit 0a3d617590e31b5c7200203111219a45f2651b70
Author: Mathieu Bultel <email address hidden>
Date: Wed Jul 26 18:01:56 2017 +0200

    Execute minor update via ansible on mistral

    This review implement the minor update workflow
    which does:
    - a noop heat stack deployment to set and refresh
      the heat config output.
    - download the heat config and put them in a ansible
      playbooks
    - run the playbooks with the mistral action

    It adds actions for the config download and update
    deployment
    Adds the config download as a library for being call
    either, by the client or mistral

    Closes-Bug: #1715557
    Change-Id: I199b35f865c0e68d28c5ddd82e5b8fe61abb5f33
    (cherry picked from commit e9a4156dddd389d8f61183e75eac6b68571475ff)