It consists of two parts:
1. Redirecting users to the configured external storage
1. Allowing the external storage to request the static object(s)
on behalf of the user by means of specific tokens
Part of https://gitlab.com/gitlab-com/gl-infra/infrastructure/issues/6829
When used with a Hash, `.keys.include?` is bad because:
1. It performs a O(n) search instead of the efficient `.has_key?`
2. It clones all keys into separate array.
Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/64975
[master] Resolve "Personal access token with only `read_user` scope can be used to authenticate any web request"
See merge request gitlab/gitlabhq!2583
Ahmad Sherif