refactor: remove auto_impl from raft storage

src/governor/mod.rs

src/lib.rs

src/on_shutdown.rs

src/rpc/cas.rs

src/rpc/expel.rs

src/rpc/join.rs

src/rpc/sync.rs

src/rpc/update_instance.rs

src/schema.rs

src/traft/node.rs

src/traft/raft_storage.rs