Comment 0 for bug 1937075

As reported and fixed in [0] if the node that is configured with an empty ``--db-*-cluster-remote-addr`` is no longer the leader, the ovn-ctl script will hang on startup.

Prior to the hang the script will successfully start the ovsdb-server, but never get to the point where a clustered DB is upgraded in the event of a schema change.

0: https://github.com/ovn-org/ovn/commit/65cc0e225b5922a72f0d40c2c39da0210669c21a