Comment 2 for bug 1714147

Reviewed: https://review.openstack.org/499446
Committed: https://git.openstack.org/cgit/openstack/ironic/commit/?id=e9ecdbbadc6a5e2a0936830251ecd1d560bf017e
Submitter: Jenkins
Branch: master

commit e9ecdbbadc6a5e2a0936830251ecd1d560bf017e
Author: Shivanand Tendulker <email address hidden>
Date: Thu Aug 31 00:25:56 2017 -0400

    Boot from volume fails with 'iscsi' deploy interface

    When boot from volume is requested for a node with 'iscsi' deploy
    interface and no 'image_source' is provided in
    'node.instance_info'. It calls boot.prepare_ramdisk() and fails
    while trying to perform validation for 'image_source'. This commit
    fixes the issue.

    Closes-Bug: #1714147

    Change-Id: Ia3bad7f3325576ba091284f9b63b67a1b26cb3b7