message: Make `TEST_NODE_COUNT` configuration for number of nodes in test
diff: @@ -137,7 +137,10 @@ async fn send_large_message_across_network() {
  // This can, on a decent machine, be set to 30, 50, maybe even 100 nodes. The default is set to
  // 5 to avoid overloading CI.
  - let node_count: usize = 5;
  + let node_count: usize = std::env::var("TEST_NODE_COUNT")
  + .expect("TEST_NODE_COUNT not set")
  + .parse()
  + .expect("cannot parse TEST_NODE_COUNT");
  // Fully connecting a 20 node network takes ~ 3 seconds. This should be ample time for gossip
  // and connecting.
  