message: Adapt to new tests structure
diff: // See the License for the specific language governing permissions and
  // limitations under the License.
  +mod nats_server;
  +
  +mod client {
  use std::io;
  use std::path::PathBuf;
  -mod util;
  -pub use util::*;
  -
  + use super::nats_server;
  #[tokio::test]
  async fn basic_tls() -> io::Result<()> {
  - let s = util::run_server("tests/configs/tls.conf");
  + let s = nats_server::run_server("tests/configs/tls.conf");
  assert!(nats_experimental::connect("nats://127.0.0.1")
  .await
  @@ -50,3 +51,4 @@ async fn basic_tls() -> io::Result<()> {
  Ok(())
  }
  +}
  