Labkey

* Remove `apikey|` prefix from webdav client configurations

- Container API
- add rename
- add get_containers
- Add transform_helper to labkey.utils
- See docs in docs/transform_helper.md for more information

* Add `hostname` property to ServerContext
* Add `base_url` property to ServerContext
* Add `webdav_client` method to ServerContext
* This method returns a webdavclient3 Client instance
* Add `webdav_path` method to ServerContext
* Add docs for WebDav support
* Add unit tests for ServerContext

- Add `domain.get_domain_details` API to domain module.
- Support saving domain options via `domain.save`.
- Fix `ConditionalFormat.to_json()` to match server response.

- Add support for ontology based column filters ONTOLOGY_IN_SUBTREE and ONTOLOGY_NOT_IN_SUBTREE
- ServerContext.make_request: payload is now optional
- ServerContext.make_request: add json kwarg
- This automatically does json_dumps and sets the content-type header for you
- Add impersonate_user and stop_impersonating to security module (including APIWrapper)
- Add more environment variables for integration test configuration
- host, port, and context_path can now be overridden via env vars

Fix Issue 42489

- Updated Run.to_json() to drop unset values