nova image prop object and notifications are out of sync

[sean mooney]

The versioned notifications for image metadata properties are out of sync with the
nova.objects.image_meta.ImageMetaProps object.

this bug tracks fixing that and adding a test to keep them in sync going forward.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/698613

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/698613
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=7dce6153622019c4f7343c49064765e4dc846ac8
Submitter: Zuul
Branch: master

commit 7dce6153622019c4f7343c49064765e4dc846ac8
Author: Sean Mooney <email address hidden>
Date: Thu Dec 12 01:42:57 2019 +0000

    Sync ImageMetaPropsPayload fields

    This change adds missing fields to the image metadata
    notification object and adds a unit tests to assert
    that the notification object and nova object stay in sync.

    This change also adds unit tests to assert the notification
    schema and fields are in sync and that the schema is
    valid.

    Change-Id: I36ea5d5e677ab3e6c88223b20f5377e9471c55db
    Closes-Bug: #1856100