Comment 4 for bug 1191913

Reviewed: https://review.openstack.org/33340
Committed: http://github.com/openstack/nova/commit/0b308ae4bebbe2e568c7b9ad73e141cc653a0101
Submitter: Jenkins
Branch: master

commit 0b308ae4bebbe2e568c7b9ad73e141cc653a0101
Author: Nikola Dipanov <email address hidden>
Date: Mon Jun 17 22:40:05 2013 +0200

    Add legacy flag to get_instance_bdms

    In change If30afdb59d4c4268b97d3d10270df2cc729a0c4c for flexibility
    reasons, it was decided to not change the method API.get_instance_bdms
    to return legacy format but to change all the places it was called.
    Sadly few of them were missed.

    This patch adds a legacy flag so that all use-cases still do what is
    expected unless explicitly changed to do otherwise.

    fixes bug: 1191913
    blueprint: improve-block-device-handling

    Change-Id: Iaebbb851e4a2a9cbee13fa271bf15d789db23f24