Comment 4 for bug 1733966

Reviewed: https://review.openstack.org/523045
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=797514bb936af846d5bc0be7a680e222dc1a6241
Submitter: Zuul
Branch: stable/pike

commit 797514bb936af846d5bc0be7a680e222dc1a6241
Author: Dan Prince <email address hidden>
Date: Wed Nov 22 17:02:19 2017 -0500

    Add DeployIdentifier to Nova discover hosts container

    Resolves an issue during scale out where the Nova init
    container that runs discover hosts wasn't executing on a Heat
    stack update if the container name and configs all stayed the same.

    Change-Id: Ie2ecd3dbddb1cf3ee5bba6f7b33e11bc9b6b8b4e
    Closes-bug: 1733966
    (cherry picked from commit 263ea5e95c9e6067d03b07baa04b50df0d08754e)