Reimplemented the ProxyArp app on top of the NeighbourResolutionService.

Also some small API changes to track app ID of handler registrations, and
improved interface matching in NeighbourPacketManager.

Added CLI to view handler registrations.

Change-Id: I8cd0b91a16d9ec60287b65f9d8fc5e3cd87560e8
diff --git a/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml b/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
index 5664cc3..4da1d8b 100644
--- a/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
+++ b/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
@@ -485,6 +485,9 @@
         <command>
             <action class="org.onosproject.cli.net.PacketProcessorsListCommand"/>
         </command>
+        <command>
+            <action class="org.onosproject.cli.net.NeighbourHandlersListCommand"/>
+        </command>
 
         <command>
             <action class="org.onosproject.cli.net.AddTestFlowsCommand"/>