Merge PR #25633 into master

Merge PR #25633 into master

* refs/pull/25633/head:
	mgr/rook: allow service describe and service ls to display nfs services
	mgr/rook: add support for adding NFS gateways
	mgr/orchestrator_cli: add support for adding NFS gateways
	mgr/orchestrator_cli: convert service add/rm commands to be type-specific
	mgr/rook: add decorator for add_stateless_service
	mgr/rook: add a context manager instead of open-coding exception handling

Reviewed-by: Ricardo Dias <rdias@suse.com>
Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>
Reviewed-by: Sebastian Wagner <swagner@suse.com>