Fix xCAT init script status reporting

xCAT in some cases was reporting improper status for certain scenarios.
Risk being inaccure if no pid file exists so that it is accurate when it
does exist.

xCAT-server/etc/init.d/xcatd

@@ -37,7 +37,12 @@ RHFailure()
 }
 MStatus()
 {
-  ps ax|grep -v grep|grep xcatd: > /dev/null 2>&1
+  PID=`cat /var/run/xcatd.pid`
+  if [ -z "$PID" ]; then
+    echo "xCAT service is not running"
+    return 3
+  fi
+  ps $PID|grep xcatd: > /dev/null 2>&1
   if [ "$?" = "0" ]; then
     RVAL=0
     echo "xCAT service is running"