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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def get_one_version(kwargs=None, call=None):
    '''
    Returns the OpenNebula version.

    .. versionadded:: 2016.3.5

    CLI Example:

    .. code-block:: bash

        salt-cloud -f get_one_version one_provider_name
    '''

    if call == 'action':
        raise SaltCloudSystemExit(
            'The get_cluster_id function must be called with -f or --function.'
        )

    if kwargs is None:
        kwargs = {}

    server, user, password = _get_xml_rpc()
    auth = ':'.join([user, password])

    return server.one.system.version(auth)[1]