Topo2: Update UI on UiModelCache changes

Change-Id: Ic2d905820376bdd54fa9a72e42110a35c5f4a083
diff --git a/tools/test/topos/regions-bayarea.sh b/tools/test/topos/regions-bayarea.sh
index 6ecdcde..c73cd3e 100755
--- a/tools/test/topos/regions-bayarea.sh
+++ b/tools/test/topos/regions-bayarea.sh
@@ -283,6 +283,7 @@
 log:set DEBUG org.onosproject.ui.impl.topo.Topo2ViewMessageHandler
 log:set DEBUG org.onosproject.ui.impl.topo.Topo2Jsonifier
 log:set DEBUG org.onosproject.ui.impl.UiWebSocket
+log:set DEBUG org.onosproject.ui.impl.UiTopoSession
 log:list
 
 EOF