[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.
I'm confused by this entry so I'll just ask, what is this Cron collector doing?  (If it is declared elsewhere, why does it need to be referenced here?)