code: function initCommand(fis) {
      var cmdConfName = 'modules.commands';
      var cmds = fis.get(cmdConfName, []);
      // builtin cmds: 'init', 'install', 'release', 'server', 'inspect'
      ['list', 'search', 'uninstall', 'update', 'test', 'publish'].forEach(function (item) {
          if (cmds.indexOf(item) === -1) {
              cmds.push(item);
          }
      });
  
      fis.set(cmdConfName, cmds);
  }
docs: 初始化命令默认相关配置
  
  @inner
  @param {Object} fis fis 实例