Add openshift_origin::ose_supported_config

This class checks for configurations that are not supported
by Openshift Enterprise. Includes basic spec tests for a good
configuration, but I need to add some unsupported test cases.
Yes, at this point in time apache-mod-rewrite is deprecated but not forbidden.

In https://github.com/openshift/puppet-openshift_origin/pull/310 we're making the vhost plugin the default. In that PR we're deploying a marker file on first run and then checking on subsequent runs to prevent puppet from changing node frontends. That action should be handled manually.