Add consumer group into header . #502

src/DotNetCore.CAP.AzureServiceBus/AzureServiceBusConsumerClient.cs

@@ -160,6 +160,7 @@ namespace DotNetCore.CAP.AzureServiceBus
         private Task OnConsumerReceived(Message message, CancellationToken token)
         {
             var header = message.UserProperties.ToDictionary(x => x.Key, y => y.Value.ToString());
+            header.Add(Headers.Group, _subscriptionName);
 
             var context = new TransportMessage(header, message.Body);