Merge pull request #29063 from sebastian-philipp/orchestrator-get_feature_set

mgr/orchestrator: Split *_stateless_service and add get_feature_set

diff --cc src/pybind/mgr/orchestrator.py
Simple merge

diff --cc src/pybind/mgr/orchestrator_cli/module.py
Simple merge

diff --cc src/pybind/mgr/rook/module.py
Simple merge

diff --cc src/pybind/mgr/rook/rook_cluster.py
Simple merge

diff --cc src/pybind/mgr/volumes/fs/volume.py
Simple merge