[VOL-4290] Voltha go library updates for gRPC migration

Change-Id: I1aa2774beb6b7ed7419bc45aeb53fcae8a8ecda0
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