message: Add test case for connecting to domains
diff: @@ -255,6 +255,11 @@ mod client {
  assert!(async_nats::connect("localhost:1111").await.is_err());
  }
  + #[tokio::test]
  + async fn connect_domain() {
  + assert!(async_nats::connect("demo.nats.io").await.is_ok());
  + }
  +
  #[tokio::test]
  async fn reconnect_fallback() {
  use async_nats::ServerAddr;
  