Bump Berkshelf to 4.0.1
Bump Berkshelf to 4.0.1

- should address the issue of failing tests because of Faraday/gzip
  response issue -> https://github.com/berkshelf/berkshelf/issues/1466

rayrod2030/chef-prometheus,elijah/chef-prometheus,elijah/chef-prometheus,rayrod2030/chef-prometheus,elijah/chef-prometheus,rayrod2030/chef-prometheus