As mentioned in https://gitlab.com/charts/gitlab/issues/1350, we only support AWS and Google for `direct_upload`. This issue tracks the work needed to support OpenStack. It seems that OpenStack has a slightly different API in https://github.com/fog/fog-openstack/blob/03e889daf2cc457853e90aa69ce91962b9caf896/lib/fog/openstack/storage.rb. 1. Add `OpenStack` to `SUPPORTED_DIRECT_UPLOAD_PROVIDERS` in https://gitlab.com/gitlab-org/gitlab-ce/blob/master/config/initializers/direct_upload_support.rb. 1. `get_object_url` => `get_object_http_url` or `get_object_https_url` 1. `delete_object_url` => ? 1. `put_object_url` => ? 1. `signed_url` => ?