The current state of group issue boards does not show the "Add issues"
button on the UI for users that are reporters of group child projects.

rails_helper.rb's only logic was to require
spec_helper.rb.

Using the sed script from
https://gitlab.com/gitlab-org/gitlab-ce/issues/59758

Co-Authored-By: André Luis <aluis@gitlab.com>

Replaces all the explicit include metadata syntax in the specs (tag:
true) into the implicit one (:tag).
Added a cop to prevent future errors and handle autocorrection.

Signed-off-by: Rémy Coutable <remy@rymai.me>

Added by
https://gitlab.com/gitlab-org/gitlab-ee/commit/88aea2cbc8633ba970335d935d725bd17654b424

Part of this MR: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/1797/

[ci skip]

Removed all the unnecessary include of `WaitForAjax` and `ApiHelpers` in the specs.
Removed unnecessary usage of `api:true`