Add “int-kafka:message-driven-channel-adapter” graphic to integration-graph tab

Add support for a graphic for the “int-kafka:message-driven-channel-adapter” on the integration-graph tab. I believe this is a relatively new component that the spring-integration-kafka project created.

More info can be found here: http://stackoverflow.com/questions/34341728/spring-integration-graph-of-spring-tool-suite-not-showing-int-kafkamessage-dri?noredirect=1#comment56458120_34341728