Google Dataproc integration

It would be nice to have an integration with Google Dataproc (managed service for running Apache Hadoop/Yarn). Now it is technically possible with Yarn cluster type, but the configuration in case of Dataproc is cumbersome. The integration with Dataproc API would bring many features on, like: * visibility of the Dataproc jobs on GCP UI * managing access with Cloud IAM * logging with Stackdriver * etc.