Verified.
Post installation with packstack[1], both horizon[2] and the access-plugin[3] were installed.
In addition to that, python-django-horizon is now an install requirement for the access-plugin.
[1] openstack-packstack-2013.2.1-0.9.dev840.el6ost.noarch
[2] python-django-horizon-2013.2-3.el6ost.noarch
[3] redhat-access-plugin-openstack-4.0.0-0.el6ost.noarch
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
http://rhn.redhat.com/errata/RHEA-2013-1859.html