Updating buck to build OSGi JARs

Includes:
  OSGiWrapper to wrap Buck JARs
    - cfgdef file support
    - WAR file generation support
  Adding checkstyle support

Change-Id: Ia25c41f945980e4b94ad5a8bd161328fa5f79c27
diff --git a/buck-tools/default.defs b/buck-tools/default.defs
index 86b7149..5ed0fea 100644
--- a/buck-tools/default.defs
+++ b/buck-tools/default.defs
@@ -1,4 +1,5 @@
 include_defs('//bucklets/maven_jar.bucklet')
+include_defs('//bucklets/onos.bucklet')
 
 BASE_DEPS = [
     '//lib:junit',