Fixing BBSim config for the 2x2 topology

Change-Id: Ib08cccea45e5318fddfa96e1f4ccbe13b62d0dc9
diff --git a/tests/data/bbsim-kind-2x2.yaml b/tests/data/bbsim-kind-2x2.yaml
index 7c48c4c..7f8e0e7 100644
--- a/tests/data/bbsim-kind-2x2.yaml
+++ b/tests/data/bbsim-kind-2x2.yaml
@@ -42,10 +42,10 @@
       s_tag: '900'
     - onu: 'BBSM00000101'
       c_tag: '902'
-      s_tag: '910'
+      s_tag: '901'
     - onu: 'BBSM00000102'
       c_tag: '903'
-      s_tag: '910'
+      s_tag: '901'
 
   dst:
     - ip: null