title: spring cloud stream keep kafka socket connection alive
body: <p>I need to configure the spring-cloud-stream Kafka socket alive because of losing the connection to the Azure EventHub. 
  Based on the recommendation page
   <a href="https://github.com/Azure/azure-event-hubs-for-kafka/blob/master/CONFIGURATION.md" rel="nofollow noreferrer">https://github.com/Azure/azure-event-hubs-for-kafka/blob/master/CONFIGURATION.md</a><br>
  I need to set the <code>socket.keepalive.enable</code> to <strong>true</strong> but I can't find the configuration to set in spring-cloud-stream </p>