Comment 2 for bug 1717123

Reviewed: https://review.openstack.org/503879
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=5b9fbc2b2bfa00de2fe0f437f21e05e3fc09a53d
Submitter: Jenkins
Branch: master

commit 5b9fbc2b2bfa00de2fe0f437f21e05e3fc09a53d
Author: Dan Sneddon <email address hidden>
Date: Wed Sep 13 17:53:36 2017 -0600

    Fix upgrades that use Management network

    Upgrades from older versions using Management network fail.
    This patch enables the management network even though it is not
    enabled in any of the role definitions. This will allow upgrades
    to complete using existing network environment files, without
    requiring operators to switch to the new method for defining
    which networks are attached to roles. Eventually these older
    environment files will be removed.

    Change-Id: Iadd12a559f0ad6918958a1355f189187fd327363
    Closes-bug: 1717123