BZ#1129896 - HA: openstack-heat-engine fails to start

https://bugzilla.redhat.com/show_bug.cgi?id=1129896

Class[quickstack::heat] needs to contain ::heat and ::heat::engine,
otherwise the ordering in Class[quickstack::pacemaker::heat] doesn't
necessarily work as one might expect.
Merge pull request #355 from jeckersb/bz1129896

BZ#1129896 - HA: openstack-heat-engine fails to start