instances: fix counter unit
instances: fix counter unit

Fixes: bug#1165123

Change-Id: Ib51c10fc8d622dc1ff121b3aedf479d62d7872f3
Signed-off-by: Julien Danjou <5c682c2d1ec4073e277f9ba9f4bdf07e5794dabe@danjou.info>

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