Add custom roles to visibility and permissions tests

Everyone can contribute. Help move this issue forward while earning points, leveling up and collecting rewards.

• Close this issue

The following discussion from !189655 (merged) should be addressed:

• @imand3r started a discussion: (+1 comment)

  Thanks for adding this, @terrichu. Do you think there is something we can add to the Add specs section that would help us test search with custom roles? If nothing else, maybe add a comment to add a spec if search is affected and link to #permissions-tests in the search doc.