message: telemetry_async: wait more to connect
diff: @@ -36,7 +36,7 @@ TEST_F(SitlTest, TelemetryAsync)
  DroneLink::ConnectionResult ret = dl.add_udp_connection();
  - sleep(2);
  + sleep(3);
  std::vector<uint64_t> uuids = dl.device_uuids();
  @@ -91,7 +91,6 @@ TEST_F(SitlTest, TelemetryAsync)
  device.telemetry().battery_async(std::bind(&print_battery, _1));
  -
  usleep(10000000);
  ASSERT_FALSE(_set_rate_error);
  