Ussuri control services don't allow Train compute hosts

[Pierre Riteau]

Ussuri has the following code in nova/objects/service.py:

OLDEST_SUPPORTED_SERVICE_VERSION = 'Ussuri'
 SERVICE_VERSION_ALIASES = {
    'Ussuri': 41
 }

This prevents Train compute hosts from joining a Ussuri control plane.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/ussuri
Review: https://review.opendev.org/c/openstack/nova/+/851732

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/nova/+/851732
Committed: https://opendev.org/openstack/nova/commit/fedcd4f6821fba6b69f5dbde9ad3e823dc50a42c
Submitter: "Zuul (22348)"
Branch: stable/ussuri

commit fedcd4f6821fba6b69f5dbde9ad3e823dc50a42c
Author: Pierre Riteau <email address hidden>
Date: Mon Aug 1 13:22:05 2022 +0200

    [stable-only] Allow Train compute hosts to register with Ussuri

    The RPC version check in Ussuri should allow Train hosts. Use version 38
    to identify them (next one after Stein which uses version 37).

    NOTE(elod.illes): this is a stable only fix as this bug was introduced
    in stable/ussrui with bug fix [1] as OLDEST_SUPPORTED_SERVICE_VERSION
    variable was not adjusted to the target branch.

    [1] https://review.opendev.org/c/openstack/nova/+/770764

    Change-Id: Ieb821cb6efb3822974ad299839009e1ea8ab8db8
    Closes-Bug: #1983263

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/nova ussuri-eol release.