Merge PR #28003 into master

Merge PR #28003 into master

* refs/pull/28003/head:
	client: do not return EEXIST for mkdirs
	pybind/mgr/volumes: print exceptions in purge thread
	pybind/mgr/volumes: refactor trash readdir
	pybind/mgr/volumes: use existing client provided recursive mkdir
	pybind/mgr/volumes: cleanup fs removal
	pybind/mgr/subvolumes: use bytes for paths
	pybind/mgr/volumes: remove unused property
	test: add basic purge queue validation test
	mgr / volumes: schedule purge job for volumes on init
	mgr / volumes: purge queue for async subvolume delete
	mgr / volumes: maintain connection pool for fs volumes
	mgr / volumes: wrap rmtree() call within try..except block
	mgr / volumes: use negative error codes everywhere
	test: cleanup removing all subvolumes before removing subvolume group

Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>