[ci] Fix test IssueControllerTest#test_get_issue_for_linked_packages

In our test environment only fred, king and Admin are allowed to
add the Issue Attribute to a project.
Because of that the test failure was correct and we had to adopt our test
suite by:
* Verifying that users that lack permissions are not allowed to add
  Attributes to a project
* Users that are permitted via role permissions are allowed to add
  an Attribute