917a970b27
JIRA: https://jira.spring.io/browse/INT-3480 In docs, it s said: ``` The DefaultPahoMessageConverter can be configured to return the raw byte[] in the payload by declaring it as a <bean/> and setting the payloadAsBytes property. ``` http://docs.spring.io/spring-integration/docs/4.0.0.M3/reference/html/mqtt.html