Currently a new node is marked as alive too late, after it is already
reported as a pending node. The patch series changes replace procedure
to be the same as what node_ops do: first stop reporting the IP of the
node that is being replaced as a natural replica for writes, then mark
the IP is alive, and only after that report the IP as a pending endpoint.
Fixes: scylladb/scylladb#17421
* 'gleb/17421-fix-v2' of github.com:scylladb/scylla-dev:
test_replace_reuse_ip: add data plane load
sync_raft_topology_nodes: make replace procedure similar to nodeops one
storage_service: topology_coordinator: fix indentation after previous patch
storage_service: topology coordinator: drop ring check in node_state::replacing state
3363f6e1e8