ONOS-2741 Fixing broken topology discovery.

Change-Id: I015b25719dc4310635a4c37527f629220aba64e8
diff --git a/drivers/src/main/resources/onos-drivers.xml b/drivers/src/main/resources/onos-drivers.xml
index 91741ce..0a5742b 100644
--- a/drivers/src/main/resources/onos-drivers.xml
+++ b/drivers/src/main/resources/onos-drivers.xml
@@ -18,7 +18,7 @@
     <driver name="default"

             manufacturer="ON.Lab" hwVersion="0.0.1" swVersion="0.0.1">

         <behaviour api="org.onosproject.net.behaviour.Pipeliner"

-                   impl="org.onosproject.driver.pipeline.OpenVSwitchPipeline"/>

+                   impl="org.onosproject.driver.pipeline.DefaultSingleTablePipeline"/>

         <behaviour api="org.onosproject.openflow.controller.driver.OpenFlowSwitchDriver"

                    impl="org.onosproject.driver.handshaker.DefaultSwitchHandshaker"/>

                    <behaviour api="org.onosproject.net.behaviour.TunnelConfig"