packaging: services: don't enable services on install

Avoid to enable HA services automatically after
rpm install.
It should be done by hosted-engine --deploy.

Change-Id: I9064a8a7bc28d0e581f2311d11b9fdca375dd3b5
Related-To: https://bugzilla.redhat.com/1066373
Signed-off-by: Sandro Bonazzola <sbonazzo@redhat.com>