Image property filter can't handle old vm_modes

[Brian Elliott]

The ImagePropertyFilter fails if it encounters an old "vm_mode" metadata on an older image. Examples: "pv" or "hv". In such cases, the instance will fail to build.

See the notes in nova.compute.vm_mode on backward compatibility.

[Brian Elliott (belliott)]

https://review.openstack.org/#/c/71349/

Not sure why review didn't auto-link here.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/71349
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=818353e8c88694a7ccfaa2fd18e1e89add0ca8b7
Submitter: Jenkins
Branch: master

commit 818353e8c88694a7ccfaa2fd18e1e89add0ca8b7
Author: Brian Elliott <email address hidden>
Date: Fri Jan 10 19:44:44 2014 +0000

    Make image props filter handle old vm_modes

    The ImagePropertyFilter would fail to build an instance if the image
    used an older style vm_mode (e.g. 'pv') as described in
    nova.compute.vm_mode. This change will convert the vm mode string to
    the current form.

    Change-Id: Ibde37e28b02d9e866b286ea14c47a6a8411d94b4
    Closes-Bug: #1276773