Comment 1 for bug 1715083

Reviewed: https://review.openstack.org/502957
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=d14d9202e3a0d7ce4547d69a6857c8b9f1874a65
Submitter: Jenkins
Branch: master

commit d14d9202e3a0d7ce4547d69a6857c8b9f1874a65
Author: Jose Luis Franco Arza <email address hidden>
Date: Tue Sep 12 13:17:04 2017 +0200

    Avoid cloudwatch endpoint retrieve when disabled

    If openstack-api-cloudwatch service is disabled in a
    deployment these lines of code will provoke a
    traceback when trying to get the cloudwatch
    end-point.

    Change-Id: I7257f79af764cddc16423826143b0d8babfe54e7
    Partial-Bug: #1715083