Comment 8 for bug 1741125

Reviewed: https://review.openstack.org/531405
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=1ce8428f162679a52846b65ba1574090283922f2
Submitter: Zuul
Branch: master

commit 1ce8428f162679a52846b65ba1574090283922f2
Author: Ed Leafe <email address hidden>
Date: Thu Jan 4 20:43:23 2018 +0000

    Add regression test for resize failing during retries

    During testing in the alternate host series, it was found that retries
    when resizing an instance would always fail. This turned out to be true
    even before alternate hosts for resize was introduced. Further
    investigation showed that there was a race in call to retry the resize
    and the revert of the original attempt.

    This adds a functional regression test to show the failure. A follow up
    patch with the fix will modify the test to show it passing again.

    Related-Bug: 1741125

    Change-Id: I0760f3e3bc447c39a6443afd7857046a08b8f01d