improve promote script to use rsync instead of cp

releng.control/promote.sh

@@ -168,7 +168,7 @@ then
 	     nTrys=$(($nTrys + 1))
 	     if [ $verboseFlag ] ; then
              echo "rsync failed with $exitCode. Retrying $nTrys times."
-		     if [ $nTrys > $maxTrys ] ; then
+		     if [ $nTrys -gt $maxTrys ] ; then
 		     	 echo "Number of re-trys exceeded. rsync exit code: $exitCode"
 		     	 exit $exitCode
 		     fi