code: def __init_configsvrs(self, params):
          
          self._configsvrs = []
          for cfg in params:
              # Remove flags that turn on auth.
              cfg = self._strip_auth(cfg)
              server_id = cfg.pop('server_id', None)
              version = cfg.pop('version', self._version)
              cfg.update({'configsvr': True})
              if self.enable_ipv6:
                  common.enable_ipv6_single(cfg)
              self._configsvrs.append(Servers().create(
                  'mongod', cfg, sslParams=self.sslParams, autostart=True,
                  version=version, server_id=server_id))
docs: create and start config servers