ONOS-542 Defining application subsystem interfaces & public constructs.

Change-Id: Iba0d2cb69dace5beee8a68def9918059ce755b5c
diff --git a/core/pom.xml b/core/pom.xml
index c826b3b..5e2058b 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -33,9 +33,9 @@
 
     <modules>
         <module>api</module>
+        <module>common</module>
         <module>net</module>
         <module>store</module>
-        <module>json</module>
     </modules>
 
     <dependencies>