Simplifying rules and providing sensible defaults

Updated cordvtn, dhcp, fwd, onos-api, of-api, onlab-rest, onos-rest, onos-gui

Also, fixed checkstyle error print

Change-Id: I9d6ab76791e8603678079067a3b4e007ca7c4667
diff --git a/tools/build/conf/BUCK b/tools/build/conf/BUCK
index 71f32e6..73831c4 100644
--- a/tools/build/conf/BUCK
+++ b/tools/build/conf/BUCK
@@ -14,6 +14,7 @@
   visibility = [ 'PUBLIC' ]
 )
 
+#FIXME location suppression.xml does not trigger this rule
 export_file(
   name = 'suppressions.xml',
   src = suppression_source,