Merge branch 'fp-refactor-cdn-frontend-url' into 'master'

Extract class from `cdn_frontend_url` method

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/152547



Merged-by: Stan Hu <stanhu@gmail.com>
Approved-by: Panos Kanellidis <pkanellidis@gitlab.com>
Approved-by: Stan Hu <stanhu@gmail.com>
Reviewed-by: Panos Kanellidis <pkanellidis@gitlab.com>
Co-authored-by: Fabio Pitino <fpitino@gitlab.com>