Backport GitLab.com Pages IP change to 8.17
Backport the new Pages IP changes in 8.17 due to https://gitlab.com/gitlab-com/gitlab-docs/merge_requests/64.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Backport the new Pages IP changes in 8.17 due to https://gitlab.com/gitlab-com/gitlab-docs/merge_requests/64.