This removes usage of deprecated Ceilometer API from the hot tempaltes
Marks as deprecated the cfn template.
This doesn't update the openshift, mistral, senlin
autoscaling/autohealing templates. Mainly because I don't have the
knowledge to change where the custom metrics are send from
Ceilometer-API to Gnocchi API.
Change-Id: I4a617daf063fb1faf01c71762d6509cb00eed0b6