Dataproc - June 27th, 2018 [Feature]

## Feature * Announcing the Beta release of [Cloud Dataproc Customer Managed Encryption Keys (CMEK)](https://cloud.google.com/dataproc/docs/concepts/configuring-clusters/customer-managed-encryption), a feature that allows you to create, use, and revoke the [key encryption key (KEK)](https://cloud.google.com/security/encryption-at-rest/default-encryption/#key%5Fmanagement) for Compute Engine VMs in your cluster and the Cloud Storage bucket used with Cloud Dataproc. * Announcing the general availability (GA) release of Cloud Dataproc and Customer-Managed Encryption Keys on BigQuery. Cloud Dataproc users can now use [Customer-Managed Encryption Keys (CMEK)](https://cloud.google.com/bigquery/docs/customer-managed-encryption) to access protected BigQuery datasets and tables (see [Writing a MapReduce Job with the BigQuery Connector](https://cloud.google.com/dataproc/docs/tutorials/bigquery-connector-mapreduce-example) for an example). * Announcing the general availability (GA) release of [Cloud Dataproc Persistent Solid State Drive (PD-SSD) Boot Disks](https://cloud.google.com/dataproc/docs/concepts/compute/dataproc-pd-ssd), which allows you to create clusters that use PD-SSDs for the master and worker node boot disks.