Merge pull request #12484 from antobinary/may31-bbb-conf

fix(bbb-conf):Only show status for multi kurento if that is configured

bigbluebutton-config/bin/bbb-conf

@@ -422,9 +422,12 @@ display_bigbluebutton_status () {
         units="$units mongod bbb-html5 bbb-webrtc-sfu kurento-media-server"
 
 	for i in `seq 8888 8890`; do
+	  # check if multi-kurento setup is configured
+	  if [ -f /usr/lib/systemd/system/kurento-media-server-${i}.service ]; then
             if systemctl is-enabled kurento-media-server-${i}.service > /dev/null; then
               units="$units kurento-media-server-${i}"
             fi
+	  fi
         done
 
 	source /usr/share/meteor/bundle/bbb-html5-with-roles.conf