Notice that patch [1] fixed the error of properties
format for volume qos in volume v2, but there is the
same bug in volume v1, and the patch missed that, so
fix the problem in v1 as well
[1] https://review.openstack.org/#/c/421065/
Partial-Bug: #1656767
Change-Id: I156bf13d164dbd0d0a7ce394964176718c4ff0e5