protobuf added

go.mod

@@ -11,10 +11,12 @@ require (
 	github.com/go-openapi/strfmt v0.19.5
 	github.com/go-openapi/swag v0.19.9 // indirect
 	github.com/go-openapi/validate v0.19.11 // indirect
+	github.com/golang/protobuf v1.4.2
 	github.com/jessevdk/go-flags v1.4.0 // indirect
 	github.com/mattn/go-sqlite3 v1.14.3
 	github.com/openconfig/goyang v0.0.0-20200917201611-633eccb6fa97 // indirect
 	github.com/openconfig/ygot v0.8.7
 	golang.org/x/net v0.0.0-20200904194848-62affa334b73 // indirect
 	google.golang.org/grpc v1.29.1
+	google.golang.org/protobuf v1.23.0
 )