class RuboCop::Cop::Chef::Modernize::LegacyBerksfileSource

There have been many different valid community site / Supermarket URLs to use in a cookbook’s Berksfile. These old URLs continue to function via redirects, but should be updated to point to the latest Supermarket URL.

@example

### incorrect
source 'http://community.opscode.com/api/v3'
source 'https://supermarket.getchef.com'
source 'https://api.berkshelf.com'
site :opscode

### correct
source 'https://supermarket.chef.io'