including engine files in katello-common for headpin
Rubocop: checking integration_spec folder
Rubocop: Fixing top level models directory
Merge pull request #2864 from daviddavis/temp/20130901120718

Rubocop: Fixing top level models directory
Rubocop: Fixing app/lib directory
Merge pull request #2862 from daviddavis/temp/20130831151809

Rubocop: checking integration_spec folder
Merge pull request #2861 from daviddavis/temp/20130831123621

Rubocop: Fixing app/lib directory
Rubocop: Cleaning up helpers
Merge pull request #2860 from daviddavis/temp/20130831082813

Rubocop: Cleaning up helpers
Merge pull request #2835 from jlsherrill/headpin_fix

including engine files in katello-common for headpin