[WIP] BZ #1088613 - Add Ceilometer Service to HA hostgroup.

https://bugzilla.redhat.com/show_bug.cgi?id=1088613

Add Ceilometer and Mongodb to HA configurations.
Ceilometer::expirer creates the cron task with this title.  This collector simple overrides the command in that task with the additional random bit to prevent mongodb access issues (this is ported from enovance version)