Ensure that integer chef config attributes get placed in solo.rb/client.rb properly

eg yum_timeout: https://github.com/mojolingo/lumenvox-chef/commit/4e04704f8525e7a9e86035d6c75c47e5e403b5a5
Add tests for formatting of Array values in Chef config
Add test coverage for integer values in Chef config
Fix style failure
Ensure symbol and boolean values in Chef config are formatted properly
This complexity was all entirely unnecessary
Ensure YAML values are rendered in solo.rb and client.rb correctly