Comment 10 for bug 1445637

In review [1] it was figured out that this is a feature request (=>"wishlist"). The effort is driven by the bp [2] (=> "Opinion"). No need for this bug report anymore.

References:
[1] https://review.openstack.org/#/c/201019/
[2] https://blueprints.launchpad.net/nova/+spec/non-ephemeral-storage-quota-assign