Comment 40 for bug 1525915

Reviewed: https://review.openstack.org/275735
Committed: https://git.openstack.org/cgit/openstack/glance/commit/?id=c5c731c7153d6d46c27260474d2811d504dfac5c
Submitter: Jenkins
Branch: stable/kilo

commit c5c731c7153d6d46c27260474d2811d504dfac5c
Author: Erno Kuvaja <email address hidden>
Date: Tue Jan 19 13:37:05 2016 +0000

    Prevent user to remove last location of the image

    If the last location of the image is removed, image transitions back to queued.
    This allows user to upload new data into the existing image record. By
    preventing removal of the last location we prevent the image transition back to
    queued.

    This change also prevents doing the same operation via replacing the locations
    with empty list.

    SecurityImpact
    DocImpact
    APIImpact

    Conflicts:
     glance/tests/unit/v2/test_images_resource.py

    Conflicts:
     glance/api/v2/images.py

    Change-Id: Ieb03aaba887492819f9c58aa67f7acfcea81720e
    Closes-Bug: #1525915
    (cherry picked from commit e9e45baa9aaf58e69964419b6b4fb2048d115a0c)