Comment 18 for bug 1677621

Reviewed: https://review.openstack.org/590062
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=559de0d0a3df92ef9dca21edfaa754a2848013c3
Submitter: Zuul
Branch: stable/queens

commit 559de0d0a3df92ef9dca21edfaa754a2848013c3
Author: paul-carlton2 <email address hidden>
Date: Thu Oct 6 12:02:15 2016 +0100

    Update nova network info when doing rebuild for evacuate operation

    When nova evacuate or host-evacuate are used to recreate instances with
    sriov ports the instances are allocated new device ids on the target and
    neutron is updated accordingly. However the network info data passed
    to the driver spawn method is not updated and thus the instance tries
    to use the device id they were allocated on the source node. If a pre
    existing instance is using that device id or no such device exists on
    the target node then the instance will fail to start.

    NOTE(mriedem): The test had to be modified in the backport because
    notify_about_instance_rebuild and _check_trusted_certs didn't exist
    in Queens.

    Co-Authored-By: Steven Webster <email address hidden>
    Change-Id: I860ab9cf3f9a38bd4ea5bceecda8105b6fee93dc
    Closes-Bug: #1630698
    Related-Bug: #1677621
    (cherry picked from commit 8e052c7fe9262c38da9d8b5f9a0ee889d9c1c6be)