Comment 6 for bug 1465333

Reviewed: https://review.fuel-infra.org/13124
Submitter: Vitaly Sedelnik <email address hidden>
Branch: openstack-ci/fuel-5.1.1-updates/2014.1.1

Commit: f82390b5244137f82dd64a1f2a68448c293b391e
Author: Eric Harney <email address hidden>
Date: Fri Oct 23 13:20:08 2015

Disallow backing files when uploading volumes to image

Volumes with a header referencing a backing file can leak
file data into the destination image when uploading a
volume to an image.

Halt the upload process if the volume data references a
backing file to prevent this.

Closes-Bug: #1465333
Change-Id: Iab9718794e7f7e8444015712cfa08c46848ebf78
(cherry picked from commit 9634b76ba5886d6c2f2128d550cb005dabf48213)
Conflicts:
    cinder/tests/test_image_utils.py (backport to old tests)
(cherry picked from commit d31c937c566005dedf41a60c6b5bd5e7b26f221b)
Conflicts:
    cinder/tests/test_image_utils.py