Goal: 

• Cherry-pick the PowerScale driver to RHOSO 18 with no regressions 

Acceptance Criteria:

A list of verification conditions, successful functional tests, or expected outcomes in order to declare this story/task successfully completed.

• Squash and merge the following changes into RHOSO 18:
  • https://review.opendev.org/c/openstack/manila/+/952736  Dell PowerScale: Rename Isilon to PowerScale in Manila Driver
  • https://review.opendev.org/c/openstack/manila/+/947255 Dell PowerScale: Added support of thin provisioning
  • https://review.opendev.org/c/openstack/manila/+/955856 Dell PowerScale: add support for ensure shares
  • https://review.opendev.org/c/openstack/manila/+/955853 Dell PowerScale: add support for update share stats
  • https://review.opendev.org/c/openstack/manila/+/943233 Dell PowerScale: Http auth issue, SSL verification error and etc.
  • https://review.opendev.org/c/openstack/manila/+/957484 Dell PowerScale: Add space in the log (follow-up)
• Aside from running unit and linting tests, we'll not be able to test the functionality of the driver itself.