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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 config(name, value):
    '''
    Set Traffic Server configuration variable values.

    .. code-block:: yaml

        proxy.config.proxy_name:
          trafficserver.config:
            - value: cdn.site.domain.tld

        OR

        traffic_server_setting:
          trafficserver.config:
            - name: proxy.config.proxy_name
            - value: cdn.site.domain.tld

    '''
    ret = {'name': name,
           'changes': {},
           'result': None,
           'comment': ''}

    if __opts__['test']:
        ret['comment'] = 'Configuring {0} to {1}'.format(
            name,
            value,
        )
        return ret

    __salt__['trafficserver.set_config'](name, value)

    ret['result'] = True
    ret['comment'] = 'Configured {0} to {1}'.format(name, value)
    return ret