Fix operation when quorum is lost:
- NAK all pending requests
- Drop all locks
- Until quorum is regained, NAK all new lock requests
Signed-off-by: Ryan McCabe <rmccabe@redhat.com>
Reviewed-by: Lon Hohberger <lhh@redhat.com>
Reviewed-by: Fabio M. Di Nitto <fdinitto@redhat.com>