'Set cDOT API client for the specified config backend stanza name.'

def _update_zapi_client(self, backend_name):

    self.zapi_client = dot_utils.get_client_for_backend(backend_name)
    self.vserver = self.zapi_client.vserver
    self.ssc_library._update_for_failover(self.zapi_client, self._get_flexvol_to_pool_map())
    ssc = self.ssc_library.get_ssc()
    self.perf_library._update_for_failover(self.zapi_client, ssc)
    self.lun_table = {}
