Forwarding limit to OpenAI made the ownership filter cut the page down after
the fact, so a key that owned an older container got an empty first page and
its cursor never moved. Non-admin lists now walk upstream pages of 100 until
they have enough owned containers (or five pages), trim to the requested
limit, and report first_id, last_id and has_more off what the caller keeps.
Also assigns tests/test_litellm/proxy/container_endpoints to a CI shard.
The container retrieve, list, delete, create and file routes validated the
provider's error body against the success model, so a deleted or unknown
container and a rejected API key surfaced as 500 pydantic errors instead of
the upstream 404 or 401. The handlers now raise the provider error class with
the upstream status and message before transforming the response.
GET /v1/containers dropped after, limit and order before calling the
provider, and GET /v1/containers/{id}/files dropped the same three, so
paginated list calls ignored their pagination arguments. Both routes now
forward their declared query params.
