Augment the onos_jar to allow specifying bundle_classpath

Change-Id: I52dc7beaf6aab83eb70f12f0687d61dd21922de3
diff --git a/bucklets/onos.bucklet b/bucklets/onos.bucklet
index d863db1..351212c 100644
--- a/bucklets/onos.bucklet
+++ b/bucklets/onos.bucklet
@@ -134,6 +134,7 @@
     import_packages = '*',
     dynamicimport_packages = '',
     embedded_dependencies = '',
+    bundle_classpath = '',
     export_packages = '!.,!*.impl.*,!*.internal.*,*',
     package_name_root = 'org.onosproject',
     include_resources = {},
@@ -186,6 +187,7 @@
       include_resources = include_resources,
       dynamicimport_packages = dynamicimport_packages,
       embedded_dependencies = embedded_dependencies,
+      bundle_classpath = bundle_classpath,
       web_context = web_context,
       api_title = api_title,
       api_version = api_version,