List pre-receive environments

GET /admin/pre-receive-environments
Status: 200 OK
Link: <https://api.github.com/resource?page=2>; rel="next",
      <https://api.github.com/resource?page=5>; rel="last"
[
  {
    "id": 1,
    "name": "Default",
    "image_url": "githubenterprise://internal",
    "url": "https://github.example.com/api/v3/admin/pre-receive-environments/1",
    "html_url": "https://github.example.com/admin/pre-receive-environments/1",
    "default_environment": true,
    "created_at": "2016-05-20T11:35:45-05:00",
    "hooks_count": 14,
    "download": {
      "url": "https://github.example.com/api/v3/admin/pre-receive-environments/1/downloads/latest",
      "state": "not_started",
      "downloaded_at": "2016-05-26T07:42:53-05:00",
      "message": null
    }
  },
  {
    "id": 2,
    "name": "DevTools Hook Env",
    "image_url": "https://my_file_server/path/to/devtools_env.tar.gz",
    "url": "https://github.example.com/api/v3/admin/pre-receive-environments/2",
    "html_url": "https://github.example.com/admin/pre-receive-environments/2",
    "default_environment": false,
    "created_at": "2016-05-20T11:35:45-05:00",
    "hooks_count": 1,
    "download": {
      "url": "https://github.example.com/api/v3/admin/pre-receive-environments/2/downloads/latest",
      "state": "success",
      "downloaded_at": "2016-05-26T07:42:53-05:00",
      "message": null
    }
  }
]