ipatests: remove all occurrences of osinfo.version_id
    
    The fix for https://pagure.io/freeipa/issue/7868 introduced
    a tuple-based OS version management method (osinfo.version_number)
    by Christian Heimes.
    Convert all occurrences of osinfo.version_id in ipatests to
    osinfo.version_number then remove osinfo.version_id.
    
    Related to: https://pagure.io/freeipa/issue/7873
    Signed-off-by: François Cami <fcami@redhat.com>
    Reviewed-By: Christian Heimes <cheimes@redhat.com>
    Reviewed-By: Christian Heimes <cheimes@redhat.com>