Starting to include kafka-integration app as part of Buck build.

- refactored to follow the api & app structure
- added buck files
- builds and loads
- cleaned-up and fixed number of pom files to function as expected
      (meaning "mvn clean install" actually works)

Change-Id: Ib896269c4986f6ee5cd6bae7cf508f71b64f59f9
diff --git a/apps/cfm/BUCK b/apps/cfm/BUCK
index b1c299d..6e2c44a 100644
--- a/apps/cfm/BUCK
+++ b/apps/cfm/BUCK
@@ -26,7 +26,7 @@
 
 onos_app (
     title = 'Layer 2 Monitoring CFM Application',
-    category = 'default',
+    category = 'Utility',
     url = 'http://onosproject.org',
     description = 'Layer 2 Monitoring Connectivity Fault Management App',
 )