Fix for generating stat graphs in TestON nightly tests.

Change-Id: Ia0576ad9caeebb504340b3e6abe0ed1dc7680b34
diff --git a/TestON/JenkinsFile/MasterTrigger.groovy b/TestON/JenkinsFile/MasterTrigger.groovy
index c94aecb..776d50d 100644
--- a/TestON/JenkinsFile/MasterTrigger.groovy
+++ b/TestON/JenkinsFile/MasterTrigger.groovy
@@ -449,7 +449,8 @@
                                      test_list.addPrefixToBranch( b ),
                                      graphPaths[ "histogramMultiple" ],
                                      graphPaths[ "pieMultiple" ],
-                                     graphPaths[ "saveDirectory" ] )
+                                     graphPaths[ "saveDirectory" ],
+                                     "VM" )
         }
     }
 }