Allow building third-party apps based on gRPC

By publishing the repackaged grpc and protobuf artifacts

Change-Id: Ib3af7dba4f64948132aa70be31922de61d6f6ab2
diff --git a/apps/openstacktelemetry/app/BUILD b/apps/openstacktelemetry/app/BUILD
index e4422bc..ecfb34d 100644
--- a/apps/openstacktelemetry/app/BUILD
+++ b/apps/openstacktelemetry/app/BUILD
@@ -12,8 +12,8 @@
     "@jetty_util//jar",
     "@jetty_websocket//jar",
     "@servlet_api//jar",
-    "@io_grpc_grpc_java//core",
-    "@io_grpc_grpc_java//protobuf-lite",
+    "//lib:io_grpc_grpc_core_context",
+    "//lib:io_grpc_grpc_protobuf_lite",
     "//core/store/serializers:onos-core-serializers",
     "//apps/openstacknode/api:onos-apps-openstacknode-api",
     "//apps/openstacknetworking/api:onos-apps-openstacknetworking-api",