Updated openstack/openstack
Project: openstack-dev/devstack  b61fc03102ca49d4b8c41710f5c9d7fcf7805ec7
null
Replace DEFAULT section with service_credentials

Some options defined in ceilometer.service should be in service_credentials
section instead of DEFAULT, which is deprecated since Havana.

Change-Id: I69077394a77f379db2be593a9fa15d414015610a