message: Add a logging entry.
  Signaling that joining step is done.
diff: @@ -189,6 +189,8 @@ impl Cli {
  .await?;
  joiner_runner.run(&mut rng).await;
  + info!("finished joining");
  +
  let config = joiner_runner.into_inner().into_validator_config().await;
  let mut validator_runner =
  