Adding build tools for gRPC compilation.
ONOS-6095

Change-Id: I80687eb2a91ad60c4dbec0bb966e917555d46151
diff --git a/buck-tools/BUCK b/buck-tools/BUCK
index 6d05f9e..9548e41 100644
--- a/buck-tools/BUCK
+++ b/buck-tools/BUCK
@@ -52,3 +52,9 @@
   src = 'yang-schema',
   visibility = [ 'PUBLIC' ],
 )
+
+export_file(
+  name = 'grpc',
+  src = 'grpc',
+  visibility = [ 'PUBLIC' ],
+)