Comment 4 for bug 1707021

Reviewed: https://review.openstack.org/493227
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=322a99db22fce1548358514500f2152fcc32622c
Submitter: Jenkins
Branch: stable/pike

commit 322a99db22fce1548358514500f2152fcc32622c
Author: EdLeafe <email address hidden>
Date: Wed Jul 26 23:07:38 2017 +0000

    Handle addition of new nodes/instances in ironic flavor migration

    The original idea for ironic flavor migration was to handle it in
    init_host(), so that the code wouldn't run often. But in a situation
    like an upgrade with multiple Nova computes handling ironic nodes, this
    may not cover all the nodes, so we are moving it to be run whenever the
    cache is refreshed, and new nodes for the compute service that have
    instances are detected. We also need to cover the cases where an
    existing node has a new instance created on it to ensure that that new
    instance's flavor is also migrated.

    Closes-Bug: #1707021

    Change-Id: If0a7af3a958cf3aba95b89b96df5ff6bf252b110
    (cherry picked from commit c3118b91db4b97a689c9a2f25a9554a0ccb29252)