gRPC migration

Change-Id: I3129ae27d7ee12a23c7046f0d877e8064f2fd7f4
diff --git a/vendor/golang.org/x/net/idna/tables9.0.0.go b/vendor/golang.org/x/net/idna/tables9.0.0.go
index 8b65fa1..4074b53 100644
--- a/vendor/golang.org/x/net/idna/tables9.0.0.go
+++ b/vendor/golang.org/x/net/idna/tables9.0.0.go
@@ -1,5 +1,6 @@
 // Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
 
+//go:build !go1.10
 // +build !go1.10
 
 package idna