message: Show progress in log in networking test
diff: @@ -138,7 +138,7 @@ async fn send_large_message_across_network() {
  // At this point each node has at least one other peer. Assuming no split, we can now start
  // gossiping a large payloads. We gossip one on each node.
  let node_ids: Vec<_> = net.nodes().keys().cloned().collect();
  - for sender in &node_ids {
  + for (index, sender) in node_ids.iter().enumerate() {
  let dummy_payload = DummyPayload::random_with_size(&mut rng, large_size);
  // Calling `broadcast_message` actually triggers libp2p gossping.
  @@ -149,7 +149,7 @@ async fn send_large_message_across_network() {
  })
  .await;
  - info!(?sender, payload = %dummy_payload,
  + info!(?sender, payload = %dummy_payload, round=index, total=node_ids.len(),
  "Started broadcast/gossip of payload, waiting for all nodes to receive it");
  net.settle_on(
  &mut rng,
  