Updated openstack/openstack
Project: openstack/heat  52fc26fabbe1401ca04da733583a8d97baf49cfd

Only push metadata when required

Metadata only needs to be pushed on deployment update when the
config_id changes.

Tripleo are experiencing config being retriggered by deployment signalling,
causing eternal config loops.

Change-Id: I3953d45db745ee6a7a4a7b0f989f18cb0ecba3bf
Closes-Bug: #1320262