Detect using template or file to create a cron.d config

[tas50]

What category of cop is this?:

Please try to select as few as possible.

• [ ] ChefDeprecations - A cop that alerts on a deprecation in the Chef Infra Client
• [ ] ChefCorrectness - A cop that alerts when incorrect coding behavior is being used
• [ ] ChefSharing - A cop that alerts to missing functionality necessary for sharing cookbooks with others
• [ ] ChefStyle - A cop that alerts to a style best practice
• [x] ChefModernize - A cop that alerts when a cookbook can be simplified or modernized with new functionality
• [ ] ChefEffortless - A cop that alerts on code that must be resolved to move to the Effortless pattern

Describe the new cop:

We should encourage the usage of the cron_d resource instead of file/template to create cron jobs.

What it would trigger on:

file '/etc/cron.d/novnc_tokens' do
  content "* * * * * root /opt/websockify/novnc_tokens.rb -a #{node['abiquo']['websockify']['api_url']} -u #{node['abiquo']['websockify']['user']} -p #{node['abiquo']['websockify']['pass']} -f /opt/websockify/config.vnc"
  owner 'root'
  group 'root'
  mode  '0644'
  action :create
  notifies :restart, 'service[websockify]'
end

[tas50]

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