Comment 7 for bug 1836369

Reviewed: https://review.opendev.org/687532
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=c565cab47945146cbbd1f1a75f42fef0fc531483
Submitter: Zuul
Branch: stable/stein

commit c565cab47945146cbbd1f1a75f42fef0fc531483
Author: Matt Riedemann <email address hidden>
Date: Thu Jul 11 17:11:32 2019 -0400

    Add functional test for resize crash compute restart revert

    During review of change I51673e58fc8d5f051df911630f6d7a928d123a5b
    there was discussion about the RESIZE_MIGRATING crashed resize
    cleanup on restart of the compute service and how it may or may
    not work but is likely missing some things to cleanup like fields
    set on the instance during prep_resize and resource allocations
    in placement.

    This adds a functional test to hit that code and make assertions
    about what it does and does not cleanup after the crashed resize.

    Related-Bug: #1836369

    Change-Id: I107d842520c088b4859a3b36621ce6bd8e970475
    (cherry picked from commit 8db712fe040b15f2b8bc5538338658d3aac246e3)