Deprecation notice for Change logic to reject container image pull policies that are not included in the `allowed_pull_policies` configuration setting.

upstream mr title: Deprecation notice for Change logic to reject container image pull policies that are not included in the allowed_pull_policies configuration setting.

upstream mr link: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/179762

upstream mr target branch: master

upstream mr milestone: 17.9

upstream mr merged at: 2025-02-14 12:29:39 +0800