[ONOS-2263] - OVSDB -- Create the implementation of TunnelProvider using
OVSDB protocol.
1.Notify the Tunnel System when tunnel is added/updated/removed.

Change-Id: I98d918a55dab77005531918ecb8864dfafbc0c42
diff --git a/providers/ovsdb/pom.xml b/providers/ovsdb/pom.xml
index 6359410..ab65c53 100644
--- a/providers/ovsdb/pom.xml
+++ b/providers/ovsdb/pom.xml
@@ -16,6 +16,7 @@
     <modules>
         <module>device</module>
         <module>host</module>
+        <module>tunnel</module>
     </modules>
 
     <dependencies>