code: async function (group) {
          console.log('init consul client widthgroup ' + group);
          const sgroup = 'saluki_' + group;
          const func = async function () {
              try {
                  _services[group] = await _init(sgroup, group);
              } catch (e) {
                  console.error('sync consul error!', e);
              }
              setTimeout(func, 10000);
          };
          setTimeout(func, 0);
      }
docs: 初始化group
  @param group