core status cleanup
core status cleanup

http://lists.openstack.org/pipermail/openstack-dev/2016-March/089502.html

Change-Id: I7c316a651d5f89eb6bcf7ea2e02b0a55beab8515

ityaptin/ceilometer,ityaptin/ceilometer,openstack/ceilometer,openstack/ceilometer