Comment 2 for bug 1555803

Reviewed: https://review.openstack.org/291416
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=e680b54e9936321e57b7a9efc877072c17b74c07
Submitter: Jenkins
Branch: stable/liberty

commit e680b54e9936321e57b7a9efc877072c17b74c07
Author: Ben Nemec <email address hidden>
Date: Thu Mar 10 14:32:17 2016 -0600

    Use puppet parameter for Heat notifications

    When the original change merged, the puppet module change to expose
    the notification_driver as a top-level param had not been backported.
    It looks like it now has, so this is breaking all of our stable
    deployments because the config option is being set twice.

    Change-Id: I5c50e4c458ed9f4ad37114550a22d297593af0f6
    Closes-Bug: 1555803