v18.01.0-beta.1

Changes since v17.10.0

Fixes:

• Volume deletion is an idempotent operation with the ontap-nas-economy driver (Issue #65).
• Enabled Trident installation on an EF-series (all-flash) array.

Enhancements:

• Enabled cloning volumes via a new PVC annotation.
• Added CHAP support for SolidFire (Issue #42).
• Added support for the etcdv3 API (Issue #45).
• Added the etcd-copy utility to migrate data between etcd clusters.
• Enabled TLS for Trident's etcd client and the etcd-copy utility.
• Added scripts and instructions for setting up an external etcd cluster using
  etcd operator.
• Significantly reduced Trident and Trident-Launcher Docker image sizes.