Update EE rubocop and rubocop-rspec
This is a matching MR for CE: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8466
Updating Rubocop on EE requires updating .rubocop_todo.yml to include any EE-specific failures.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This is a matching MR for CE: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8466
Updating Rubocop on EE requires updating .rubocop_todo.yml to include any EE-specific failures.