[ONOS-2262] - OVSDB -- Create the implementation of HostProvider using
OVSDB prototol.
1.Notify the Host System when the ovsdb vm port is added.
2.Notify the Host System when the ovsdb vm port is removed.

Change-Id: I46355cec84db897360a6eb37190a5bd7a8f3047d
diff --git a/providers/ovsdb/pom.xml b/providers/ovsdb/pom.xml
index 861344a..6359410 100644
--- a/providers/ovsdb/pom.xml
+++ b/providers/ovsdb/pom.xml
@@ -15,6 +15,7 @@
 
     <modules>
         <module>device</module>
+        <module>host</module>
     </modules>
 
     <dependencies>