Use buck version of checkstyle rules in maven build

- build and package the checkstyle rules in the onos-build-conf artifact
- modify maven build to use new version of artifact
- fix checkstyle problems in maven-only code

Change-Id: I4e4dc890ca909e47463629c732a2fc5335bb4d2a
diff --git a/tools/build/publish-target-list b/tools/build/publish-target-list
index cc83666..93a67c6 100644
--- a/tools/build/publish-target-list
+++ b/tools/build/publish-target-list
@@ -23,3 +23,4 @@
     //web/api:onos-rest
     //protocols/netconf/api:onos-protocols-netconf-api
     //apps/routing-api:onos-apps-routing-api
+    //tools/build/conf:onos-build-conf