Comment 5 for bug 1933512

The nova client in the goose library appears to have a hard-coded "v2" for use in constructing the service URL.

The ideal approach would be to request the versions and use the latest supported.

https://docs.openstack.org/api-ref/compute/?expanded=attach-a-volume-to-an-instance-detail,list-all-major-versions-detail#list-all-major-versions