fix for runit and chef-sugar
Added read of pub keys, rubocop fixes
Removed build-essentials from compile time due to build errors
Changing logging interface used in _find_master recipe
Adding a defensive case for when no masters are found that prevents accessing a nil attribute hash
Lint for FC and Rubocop
Fix for serverspec v2.0

Syntax changes for new serverspec.
Simplify the slave recipe

- Don't bomb out if master isn't found, fixes https://github.com/rackspace-cookbooks/jenkinsstack/pull/29
- Clean up conditionals to make a much cleaner recipe
Merge from upstream .rubocop.yml
Merge pull request #30 from martinb3/master

Serverspec update, slave fixes/simplifications