Freshgomod (#106)

* initial go modules, fresh start to find breaking change

* change dep to go mod vendor

* main go modules done, tests passed locally

* upgrade go in dockerfileserver

vendor/google.golang.org/protobuf/internal/fieldnum/doc.go

@@ -0,0 +1,7 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package fieldnum contains constants for field numbers of fields in messages
+// declared in descriptor.proto and any of the well-known types.
+package fieldnum