Comment 7 for bug 1565895

Reviewed: https://review.openstack.org/323741
Committed: https://git.openstack.org/cgit/openstack/compute-hyperv/commit/?id=7dcfd8c6a257ec54b97148ab87f0d7b966323761
Submitter: Jenkins
Branch: stable/mitaka

commit 7dcfd8c6a257ec54b97148ab87f0d7b966323761
Author: Lucian Petrut <email address hidden>
Date: Fri May 27 13:37:22 2016 +0300

    Fix live migration with shared storage

    At the moment, when live migration is requested, we attempt to
    copy the instance dvd disks and log files to the remote location,
    other instance files being transparently copied by Hyper-V.

    The issue is that we don't check whether shared storage is being
    used, in which case this will fail.

    This change adds this check.

    Closes-Bug: #1565895

    Change-Id: Ib646c90c830a1cd0e5401d14c6d400226b034f73
    (cherry picked from commit ba2b0bbda58228e81c163c0b7cfef29cfaf13314)