Update spec files to be rubocop compliant

- Move to use a single .rubocop.yml file
- Adjust Strainerfile to use single .rubocop.yml file
- Ensure all spec files are rubocop compliant

Addresses: blueprint rubocop-for-common
Change-Id: I550c50c55edd4725782385de2c0f66bedff3004e
Update libraries to be rubocop compliant

- Update .rubocop.yml to include libraries/**
- Update libraries to be rubocop compliant
- Update recipes/default.rb to remove unrequired rubocop:disable

Addresses: blueprint rubocop-for-common
Change-Id: I12a86bec70d1b9127d3b7d52356441637253e4f1
Merge "Update spec files to be rubocop compliant"
Merge "Update libraries to be rubocop compliant"