Nova libvirt release note
Nova libvirt release note

Add note to specify that Nova meters are mostly working with libvirt

Change-Id: I9ecc6953d7909f39e9bb84a4709db9414c40629d

JioCloud/ceilometer,eayunstack/ceilometer,tanglei528/ceilometer,redhat-openstack/ceilometer,sileht/aodh,m1093782566/openstack_org_ceilometer,pczerkas/aodh,NeCTAR-RC/ceilometer,froyobin/ceilometer,mathslinux/ceilometer,rickerc/ceilometer_audit,idegtiarov/ceilometer,rackerlabs/instrumented-ceilometer,shootstar/ctest,fabian4/ceilometer,MisterPup/Ceilometer-Juno-Extension,maestro-hybrid-cloud/ceilometer,chungg/aodh,MisterPup/Ceilometer-Juno-Extension,openstack/aodh,m1093782566/openstack_org_ceilometer,openstack/ceilometer,eayunstack/ceilometer,r-mibu/ceilometer,isyippee/ceilometer,openstack/ceilometer,chungg/aodh,tanglei528/ceilometer,Juniper/ceilometer,rackerlabs/instrumented-ceilometer,sileht/aodh,JioCloud/ceilometer,maestro-hybrid-cloud/ceilometer,cernops/ceilometer,rickerc/ceilometer_audit,NeCTAR-RC/ceilometer,dreamhost/ceilometer,froyobin/ceilometer,isyippee/ceilometer,redhat-openstack/ceilometer,tanglei528/ceilometer,dreamhost/ceilometer,Juniper/ceilometer,citrix-openstack-build/ceilometer,pczerkas/aodh,NeCTAR-RC/ceilometer,pkilambi/ceilometer,ityaptin/ceilometer,openstack/aodh,shootstar/ctest,ityaptin/ceilometer,JioCloud/ceilometer,mathslinux/ceilometer,rackerlabs/instrumented-ceilometer,idegtiarov/ceilometer,rickerc/ceilometer_audit,luogangyi/Ceilometer-oVirt,pkilambi/ceilometer,luogangyi/Ceilometer-oVirt,cernops/ceilometer,fabian4/ceilometer,r-mibu/ceilometer,citrix-openstack-build/ceilometer,citrix-openstack-build/ceilometer