Fix: pacemaker-remote: skip remote_config_check for guest-nodes

This is crucial when watchdog-fencing is enabled as the sbd-check
done by pacemaker-remote would fail on guest-containers & bundles
(eventually tearing down pacemaker-remote inside the container)
and even on system-virtualized-guests the sbd-check doesn't make
sense as these guests would be fenced by stop/start-cycling the
VM.