Add generated file

This PR adds generated files under pkg/client and vendor folder.

vendor/golang.org/x/tools/godoc/vfs/emptyvfs.go

@@ -0,0 +1,89 @@
+// Copyright 2016 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 vfs
+
+import (
+	"fmt"
+	"os"
+	"time"
+)
+
+// NewNameSpace returns a NameSpace pre-initialized with an empty
+// emulated directory mounted on the root mount point "/". This
+// allows directory traversal routines to work properly even if
+// a folder is not explicitly mounted at root by the user.
+func NewNameSpace() NameSpace {
+	ns := NameSpace{}
+	ns.Bind("/", &emptyVFS{}, "/", BindReplace)
+	return ns
+}
+
+// type emptyVFS emulates a FileSystem consisting of an empty directory
+type emptyVFS struct{}
+
+// Open implements Opener. Since emptyVFS is an empty directory, all
+// attempts to open a file should returns errors.
+func (e *emptyVFS) Open(path string) (ReadSeekCloser, error) {
+	if path == "/" {
+		return nil, fmt.Errorf("open: / is a directory")
+	}
+	return nil, os.ErrNotExist
+}
+
+// Stat returns os.FileInfo  for an empty directory if the path is
+// is root "/" or error. os.FileInfo is implemented by emptyVFS
+func (e *emptyVFS) Stat(path string) (os.FileInfo, error) {
+	if path == "/" {
+		return e, nil
+	}
+	return nil, os.ErrNotExist
+}
+
+func (e *emptyVFS) Lstat(path string) (os.FileInfo, error) {
+	return e.Stat(path)
+}
+
+// ReadDir returns an empty os.FileInfo slice for "/", else error.
+func (e *emptyVFS) ReadDir(path string) ([]os.FileInfo, error) {
+	if path == "/" {
+		return []os.FileInfo{}, nil
+	}
+	return nil, os.ErrNotExist
+}
+
+func (e *emptyVFS) String() string {
+	return "emptyVFS(/)"
+}
+
+func (e *emptyVFS) RootType(path string) RootType {
+	return ""
+}
+
+// These functions below implement os.FileInfo for the single
+// empty emulated directory.
+
+func (e *emptyVFS) Name() string {
+	return "/"
+}
+
+func (e *emptyVFS) Size() int64 {
+	return 0
+}
+
+func (e *emptyVFS) Mode() os.FileMode {
+	return os.ModeDir | os.ModePerm
+}
+
+func (e *emptyVFS) ModTime() time.Time {
+	return time.Time{}
+}
+
+func (e *emptyVFS) IsDir() bool {
+	return true
+}
+
+func (e *emptyVFS) Sys() interface{} {
+	return nil
+}