Ensure that Avahi services are running

Ensure that Avahi services are running in openshift_origin::plugins::dns::avahi
the same way that they were in openshift_origin::avahi.
Fix cgroups pam config
Merge pull request #245 from detiber/fixCgroups

Fix cgroups pam config
Merge pull request #244 from charlessimpson/ensure-avahi-running

Ensure that Avahi services are running
Removed priority setting from EPEL repo
Merge pull request #247 from nhr/epel_repo_fix

Removed priority setting from EPEL repo