'Create a client that will be used for one call.'

def _create_onetime_client(self, context, version):

    if (self.api_servers is None):
        self.api_servers = get_api_servers(context)
    (self.netloc, self.use_ssl) = next(self.api_servers)
    return _create_glance_client(context, self.netloc, self.use_ssl, version)
