Fix user for Production cluster

Change-Id: I9a4c324eb52c4278b52c42b0f66c71b93acc1941
diff --git a/TestON/tests/USECASE_SegmentRouting/USECASE_SegmentRouting.py b/TestON/tests/USECASE_SegmentRouting/USECASE_SegmentRouting.py
index 8635b79..7ec23af 100644
--- a/TestON/tests/USECASE_SegmentRouting/USECASE_SegmentRouting.py
+++ b/TestON/tests/USECASE_SegmentRouting/USECASE_SegmentRouting.py
@@ -131,8 +131,7 @@
                                        "temp",
                                        main.Mininet1.ip_address,
                                        apps,
-                                       tempOnosIp,
-                                       main.ONOSbench.user_name)
+                                       tempOnosIp )
 
         main.step( "Apply cell to environment" )
         cellResult = main.ONOSbench.setCell( "temp" )