Comment 5 for bug 1478987

Reviewed: https://review.openstack.org/221425
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=223fbd36b7ec433040f5b95dcbaacf46f6939b79
Submitter: Jenkins
Branch: master

commit 223fbd36b7ec433040f5b95dcbaacf46f6939b79
Author: Eric Harney <email address hidden>
Date: Tue Sep 8 13:31:31 2015 -0400

    Add migrate_volume to BaseVD

    migrate_volume() only exists in the deprecated VolumeDriver()
    class and not BaseVD. This means that drivers inheriting from
    *VD hit attribute errors when trying to call driver.migrate_volume().

    I suspect this indicates that we should rework some of our
    abc class structure a little bit, but this seems like a
    reasonable fix for now.

    Related-Bug: #1478987
    Related-Bug: #1471807
    Closes-Bug: #1493286

    Change-Id: I3d555507416606db265b8ebe335b51a08fe32328