Verify that 2 RG which are connected to the different ONU on the different PON Port could join the same channel

Change-Id: I3e6aa82bc70a47cc11bb1a3d977c139273046d69
diff --git a/tests/data/flex-ocp-cord-multi-uni-TT-multicast-tests-input.yaml b/tests/data/flex-ocp-cord-multi-uni-TT-multicast-tests-input.yaml
index a394ee4..770e174 100644
--- a/tests/data/flex-ocp-cord-multi-uni-TT-multicast-tests-input.yaml
+++ b/tests/data/flex-ocp-cord-multi-uni-TT-multicast-tests-input.yaml
@@ -21,9 +21,7 @@
     -
       onu_1: 'ALPHe3d1cea3'
       onu_2: 'ALPHe3d1ceb7'
-  pon_1:
-    -
-      onu_1: 'ALPHe3d1cfa7'
+      onu_3: 'ALPHe3d1cfa7'
 
 multicast_ip_addresses:
   -