openshift.ks: Run restorecon on /etc/openshift 

Run `restorecon -rv /etc/openshift` at the end of `configure_openshift`.

Delete `/etc/openshift/node.conf` from a `restorecon` command in `configure_selinux_policy_on_node` because the previous change will take care of `/etc/openshift/node.conf`.

This commit fixes bug 1110424.