code review by fei.hong: do modify app hotfix api

@@ -51,8 +51,8 @@ class HfController extends AbstractAction
         $version = $this->post('app_version');
         switch ($version) {
             case '4.0.1': // 版本
-                $uid = $this->post('uid');
-                if ($uid == 5448919) {
+                $udid = $this->post('udid');
+                if ($udid === '27920a7716251c028bfe5cc2b1ec147290a4b4e2') {
                     $result['data']['url'] = 'http://cdn.yoho.cn/app-hotfix/yohobuy/4.0.1/main-6.js';
                     $result['data']['patchv'] = '104';
                     $result['data']['filecode'] = md5('724a4bf20c515b4f55226c04551f3b7f' . 'yohopatch2016');