gRPC migration update

Change-Id: Icdd1a824948fa994cd36bd121c962f5ecf74e3cf
diff --git a/vendor/golang.org/x/net/idna/tables10.0.0.go b/vendor/golang.org/x/net/idna/tables10.0.0.go
index 54fddb4..d1d62ef 100644
--- a/vendor/golang.org/x/net/idna/tables10.0.0.go
+++ b/vendor/golang.org/x/net/idna/tables10.0.0.go
@@ -1,5 +1,6 @@
 // Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
 
+//go:build go1.10 && !go1.13
 // +build go1.10,!go1.13
 
 package idna