fix heartbeat check

var/local/xcache/icinga/heartbeat_running.sh

 #!/bin/bash
 
-lastbeat=$(journalctl -eu xcache-vp-heartbeat.service  | grep OK | awk '{print $1}')
+lastbeat=$(journalctl -eu xcache-vp-heartbeat.service  | grep OK | awk '{print $1" "$2" "$3}' | tail -n 1)
 lastbeat=$(date --date="$lastbeat" "+%s")
 now=$(date "+%s")