Setting removal of the flows to false on ONU disconnect

Change-Id: I16f7b9d00d14f1629323db251d5c42b037f8684d
diff --git a/examples/dt-values.yaml b/examples/dt-values.yaml
index 6190d24..f2e57a2 100644
--- a/examples/dt-values.yaml
+++ b/examples/dt-values.yaml
@@ -25,7 +25,8 @@
           "enableIgmpOnNni": "false",
           "enableEapol": "false",
           "enableDhcpV6": "false",
-          "enableDhcpV4": "false"
+          "enableDhcpV4": "false",
+          "removeFlowsOnDisable": "true"
         }
 
 # override BBSim config