DeviceSimulator does not use IoT Plug and Play #60
Description
One important aspect of ADT is the integration with IoT devices.
I followed the e2e tutorial and I was expecting to see a DeviceSimulator using the same DTDL model, but seems the device is not using PnP at all, eg in the connection it's not sending the model id https://github.com/Azure-Samples/digital-twins-samples/blob/master/DeviceSimulator/DeviceSimulator/AzureIoTHub.cs#L45
/cc @drwill-ms