Updated openstack/openstack
Project: openstack/ceilometer  fbe423554814cdb3abc43fddd5c32e3bdfa6c6c6

sync oslo code

synchronise up to Change-Id: I0d945784cbe24e34c8ef19d3d3c9c0f012cfe176

Change-Id: I1e28a60c8def0e3f4ba0c61985cfa0b9312ea5bd