Updated openstack/openstack
Project: openstack/nova  96f822c7b9f4fc0a3b32d5f7c9716860a7caed70
null
Add missing fields in DriverBlockDevice

Pylint reports the following, let's clean them up
["Instance of 'DriverBlockDevice' has no '_fields' member", ""]
["Instance of 'DriverBlockDevice' has no '_legacy_fields' member", ""]

Change-Id: Iaf56dc35ce5ad963a6fb50d6641b203409ca6798
Closes-Bug: #1214377