Add .paused file when server is paused (#1830)

files/auto/pause.sh

@@ -21,4 +21,7 @@ if [[ $( ps -ax -o stat,comm | grep 'java' | awk '{ print $1 }') =~ ^S.*$ ]] ; t
   # finally pause the process
   logAutopauseAction "Pausing Java process"
   pkill -STOP java
+
+  # create .paused file in data directory
+  touch /data/.paused
 fi

files/auto/resume.sh

@@ -9,4 +9,7 @@ if [[ $( ps -ax -o stat,comm | grep 'java' | awk '{ print $1 }') =~ ^T.*$ ]] ; t
   logAutopauseAction "Knocked from $1, resuming Java process"
   echo "$1" > /var/log/knocked-source
   pkill -CONT java
+
+  # remove .paused file from data directory
+  rm -f /data/.paused
 fi