Add sample forwarding application by using groups

Change-Id: I955342847b6c6ba5693e00952ba0886e2c41d1a9
diff --git a/pom.xml b/pom.xml
index accaeaf..8ff24a0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -48,6 +48,7 @@
         <module>icona</module>
         <module>patchpanel</module>
         <module>ovsdb-rest</module>
+        <module>group-fwd</module>
     </modules>
 
 </project>