Expose configuration through the API for admins
Everyone can contribute. Help move this issue forward while earning points, leveling up and collecting rewards.
As part of https://gitlab.com/gitlab-org/gitlab-ce/issues/34163#note_34935716 we need to expose some application configuration trough the API, specifically the available_repositories.
The /application/settings endpoint will include all options that are stored in the DB and can be changed while the application is running.
I propose creating a new endpoint /application/configuration that exposes the items configured in gitlab.rb/gitlab.yml but doesn't allow updating any of them.
We should then avoid confusion between repository_storages configured in gitlab.yml which describes all storages used by GitLab, and repository_storages in ApplicationSetting which describes the storages receiving writes.
@pcarranza Suggested renaming repository_storages on ApplicationSetting to active_repository_storages: https://gitlab.com/gitlab-org/gitlab-ce/issues/34163#note_35024107