gRPC migration update

Change-Id: Icdd1a824948fa994cd36bd121c962f5ecf74e3cf
diff --git a/vendor/golang.org/x/sys/unix/race.go b/vendor/golang.org/x/sys/unix/race.go
index 61712b5..6f6c5fe 100644
--- a/vendor/golang.org/x/sys/unix/race.go
+++ b/vendor/golang.org/x/sys/unix/race.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build (darwin && race) || (linux && race) || (freebsd && race)
 // +build darwin,race linux,race freebsd,race
 
 package unix