Fixes Ceilometer config error
Fixes Ceilometer config error

Change-Id: I34c1a4b868162cdcc665a3571f88729265e16714
backport: mitaka
Closes-Bug: 1589694

openstack/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals