Comment 2 for bug 1753443

Reviewed: https://review.openstack.org/549737
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=b81a66b3b0b1ce9f56280dda40ac871132cb29f2
Submitter: Zuul
Branch: master

commit b81a66b3b0b1ce9f56280dda40ac871132cb29f2
Author: git-harry <email address hidden>
Date: Mon Mar 5 10:48:28 2018 +0000

    Fix version cap when no nova-compute started

    When a zero service version is returned, it means that we have no
    services running for the requested binary. In that case, we should
    assume the latest version available until told otherwise. This usually
    happens in first-start cases, where everything is likely to be up to
    date anyway.

    This change addresses an issue where the version returned had been
    hard-coded to 4.11 (mitaka).

    Change-Id: I696a8ea8adbe9481e11407ecafd5e47b2bd29804
    Closes-bug: 1753443