Fix json syntax in inline template

Change-Id: Ie70d5c75146e81b765edde611edef81805915a0c
diff --git a/functional/test_instance_group.py b/functional/test_instance_group.py
index 33367fc..5de7ae1 100644
--- a/functional/test_instance_group.py
+++ b/functional/test_instance_group.py
@@ -51,7 +51,7 @@
         "InstanceType"      : {"Ref": "flavor"},
         "KeyName"           : {"Ref": "keyname"},
         "SecurityGroups"    : [ "sg-1" ],
-        "UserData"          : "jsconfig data",
+        "UserData"          : "jsconfig data"
       }
     }
   },