BZ #1055207 - Add localhost and ip access for Horizon UI.

https://bugzilla.redhat.com/show_bug.cgi?id=1055207

Previously we used the default puppet configuration for Horizon, which allows
access only via fqdn.  This BZ requests addition of access via public IP and
'localhost'.  We also include short fqdn as part of this patch.
Merge pull request #119 from jguiditta/bz1055207_horizon_fqdn

BZ #1055207 - Add localhost and ip access for Horizon UI.