Add an API to determine the maven coordinates for an external artifact

Change-Id: Ief747497e2d02353aeb8515597f722aaf23cdf2e
diff --git a/lib/BUCK b/lib/BUCK
index fb7c2e9..2a5a685 100644
--- a/lib/BUCK
+++ b/lib/BUCK
@@ -1,4 +1,4 @@
-# ***** This file was auto-generated at Thu, 31 May 2018 16:26:40 GMT. Do not edit this file manually. *****
+# ***** This file was auto-generated at Wed, 6 Jun 2018 17:50:58 GMT. Do not edit this file manually. *****
 # ***** Use onos-lib-gen *****
 
 pass_thru_pom(