Add bandwidth to measurements
Add bandwidth to measurements

Bandwidth notification has been implemented since Icehouse, but
never presents in documents.

Change-Id: Icc187841d8664c48151482259d5b717580115950
Closes-Bug: #1391040

idegtiarov/ceilometer,pkilambi/ceilometer,isyippee/ceilometer,mathslinux/ceilometer,fabian4/ceilometer,MisterPup/Ceilometer-Juno-Extension,fabian4/ceilometer,isyippee/ceilometer,ityaptin/ceilometer,pczerkas/aodh,chungg/aodh,pczerkas/aodh,chungg/aodh,r-mibu/ceilometer,ityaptin/ceilometer,MisterPup/Ceilometer-Juno-Extension,openstack/ceilometer,openstack/ceilometer,cernops/ceilometer,Juniper/ceilometer,cernops/ceilometer,redhat-openstack/ceilometer,eayunstack/ceilometer,idegtiarov/ceilometer,Juniper/ceilometer,openstack/aodh,redhat-openstack/ceilometer,eayunstack/ceilometer,openstack/aodh,sileht/aodh,sileht/aodh,pkilambi/ceilometer,maestro-hybrid-cloud/ceilometer,maestro-hybrid-cloud/ceilometer,r-mibu/ceilometer,mathslinux/ceilometer