BZ #1053623 - openstack-selinux package not installed

https://bugzilla.redhat.com/show_bug.cgi?id=1053623

Package openstack-selinux is now installed on RHEL/CentOS nodes
running OpenStack services. It is not installed if the node runs
Fedora, because selinux-policy package on Fedora is being updated
more frequently and should not need additional rules.