Document Kafka Streams and Sleuth integration
Document Kafka Streams and Sleuth integration

Resolves https://github.com/spring-cloud/spring-cloud-stream-binder-kafka/issues/1102

spring-cloud/spring-cloud-stream,garyrussell/spring-cloud-stream,spring-cloud/spring-cloud-stream,garyrussell/spring-cloud-stream,garyrussell/spring-cloud-stream,spring-cloud/spring-cloud-stream