packaging: setup: logging ha service startup

added an info line for telling the user that
we're ready for starting the HA service.
On first host it's also a feedback about having
detected that the VM is down.

Change-Id: I8176043bed546abd9a7ea7f03630011ffa8f832d
Signed-off-by: Sandro Bonazzola <sbonazzo@redhat.com>