Speed up Group security access specs
This is the Group equivalent of 13ad9a74
See https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7779
Part of https://gitlab.com/gitlab-org/gitlab-ce/issues/24899
This is the Group equivalent of 13ad9a74
See https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7779
Part of https://gitlab.com/gitlab-org/gitlab-ce/issues/24899