Split out image non-meters
Split out image non-meters

As much as these will be deprecated in future, it
better to have these split out so here it is.

Closes-Bug: #1494389

Change-Id: Ic5be7726b79ad712379878b3c3581f108c65801d

fabian4/ceilometer,ityaptin/ceilometer,openstack/ceilometer,redhat-openstack/ceilometer,openstack/ceilometer,idegtiarov/ceilometer,maestro-hybrid-cloud/ceilometer,redhat-openstack/ceilometer,ityaptin/ceilometer,idegtiarov/ceilometer,cernops/ceilometer,isyippee/ceilometer,eayunstack/ceilometer,isyippee/ceilometer,maestro-hybrid-cloud/ceilometer,eayunstack/ceilometer,cernops/ceilometer,fabian4/ceilometer