[IMP] kill service if sync fails

This, used in combination with a scheduler, clearly marks "problem" to the
cluster operator

backup.sh

@@ -30,6 +30,7 @@ else
     echo "Backup Failed with Status ${rc}"
     restic unlock
     copyErrorLog
+    kill 1
 fi
 
 if [ -n "${RESTIC_FORGET_ARGS}" ]; then