'load sflow config by netconf'

def netconf_load_config(self, xml_str):

    if (not xml_str):
        return
    xml_cfg = ('\n                                                <config>\n                                                <sflow    xmlns="http://www.huawei.com/netconf/vrp"    content-version="1.0"    format-version="1.0">\n                                                %s\n                                                </sflow>\n                                                </config>' % xml_str)
    self.netconf_set_config(xml_cfg, 'SET_SFLOW')
    self.changed = True
