Update style check to pass when there are no python files to check.

Change-Id: Id0407ab9074845d67fbb042549a4bf696122448c
diff --git a/jjb/OnosSystemTest/check-style.sh b/jjb/OnosSystemTest/check-style.sh
index 4be4b4c..2559978 100644
--- a/jjb/OnosSystemTest/check-style.sh
+++ b/jjb/OnosSystemTest/check-style.sh
@@ -15,8 +15,8 @@
 else
 	touch $WORKSPACE/pep8Result.txt
     rm -rf $WORKSPACE/OnosSystemTest/
-    echo "There were no files to code check, failing test so Jenkins doesn't comment."
-    exit 2
+    echo "There were no files to code check. Please complete style check manually."
+    exit 0
 fi
 
 cat $WORKSPACE/pep8Result.txt