Storio waits until one lstening port IP address exist
At startup, the storio waits indefinitely in its initialization until
at least one IP address it has to listen to is configured on the server.
When none of the configured IP address exists, a warning is logged.
When at least one of the IP address it has to listen to exists, the
storio listens to it but forgets about the ones that do not exist.
A severe is logged for each abandonned listening port. The storio will
have to be restarted to take into account the abandonned listening ports.