Update rubocop to 0.27.1
[DSL] Fix broken URL to resource_bundles
Remove use of `subject` in tests
[SpecificationDSL] Allow `requires_arc` to store file patterns
[Lockfile] Allow for the specification of specific checkout information
[RuboCop] Put a comma after the last item of a multiline hash.
[Lockfile] Store checkout options separately from dependency external sources
[LockfileSpec] Remove errant debugging statements