Set notification_format to 'unversioned'
Set notification_format to 'unversioned'

Currently there is no consumer for the versioned notification format,
which results in messages queueing up for infinite time.  Until we
have a consumer for the 'versioned' format, we set it to
'unversioned'.

Depends-On: Id08b2d5a1e87825b182e767bffc4c15e5ce9968f
Change-Id: I5be547acbd1245de42572941d2185863697f89bd

dprince/tripleo-heat-templates,openstack/tripleo-heat-templates,openstack/tripleo-heat-templates,dprince/tripleo-heat-templates