update vendor/ dir to latest w/o heroku, moby

had to lock a lot of things in place

vendor/github.com/gin-gonic/gin/benchmarks_test.go

@@ -1,3 +1,7 @@
+// Copyright 2017 Manu Martinez-Almeida.  All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file.
+
 package gin
 
 import (