[Vendor] upgrade google/go-github to v32.1.0 (#12361) (#12390)

* upgrate go-github client to v32.1.0

* migrate

vendor/github.com/google/go-github/v32/github/gitignore.go

@@ -0,0 +1,64 @@
+// Copyright 2013 The go-github 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 github
+
+import (
+	"context"
+	"fmt"
+)
+
+// GitignoresService provides access to the gitignore related functions in the
+// GitHub API.
+//
+// GitHub API docs: https://developer.github.com/v3/gitignore/
+type GitignoresService service
+
+// Gitignore represents a .gitignore file as returned by the GitHub API.
+type Gitignore struct {
+	Name   *string `json:"name,omitempty"`
+	Source *string `json:"source,omitempty"`
+}
+
+func (g Gitignore) String() string {
+	return Stringify(g)
+}
+
+// List all available Gitignore templates.
+//
+// GitHub API docs: https://developer.github.com/v3/gitignore/#listing-available-templates
+func (s *GitignoresService) List(ctx context.Context) ([]string, *Response, error) {
+	req, err := s.client.NewRequest("GET", "gitignore/templates", nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var availableTemplates []string
+	resp, err := s.client.Do(ctx, req, &availableTemplates)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return availableTemplates, resp, nil
+}
+
+// Get a Gitignore by name.
+//
+// GitHub API docs: https://developer.github.com/v3/gitignore/#get-a-gitignore-template
+func (s *GitignoresService) Get(ctx context.Context, name string) (*Gitignore, *Response, error) {
+	u := fmt.Sprintf("gitignore/templates/%v", name)
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	gitignore := new(Gitignore)
+	resp, err := s.client.Do(ctx, req, gitignore)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return gitignore, resp, nil
+}