Improve project_spec tests when expected configuration for a cop is missing.
Improve project_spec tests when expected configuration for a cop is missing.

bbatsov/rubocop,rrosenblum/rubocop,maxjacobson/rubocop,tejasbubane/rubocop,bbatsov/rubocop,rrosenblum/rubocop,tejasbubane/rubocop,maxjacobson/rubocop,maxjacobson/rubocop,rrosenblum/rubocop,tejasbubane/rubocop