Comment 2 for bug 1369508

Reviewed: https://review.openstack.org/121558
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=12b8b56807af7ce3bbe330d73864abc87cdadbf1
Submitter: Jenkins
Branch: master

commit 12b8b56807af7ce3bbe330d73864abc87cdadbf1
Author: Nikola Dipanov <email address hidden>
Date: Mon Sep 15 15:32:56 2014 +0200

    instance_topology_from_instance handles request_spec properly

    We special-case how we handle the instance that we extract from the
    request_spec data blob in virt.hardware.instance_topology_from_instance,
    however, we were making wrong assumptions about the data we get from it
    in the scheduler.

    This patch fixes how it is handled and also updates the tests and
    comments in the code to reflect it.

    Change-Id: I38d7078d670bc37ddb40fba82fd0f9cb74045047
    Closes-bug: #1369508