修复 song/url 接口提示网络拥堵的问题，单元测试修复

module/song_url.js

@@ -2,8 +2,8 @@
 
 const crypto = require('crypto')
 module.exports = (query, request) => {
-  if (!('MUSIC_U' in query.cookie))
-    query.cookie._ntes_nuid = crypto.randomBytes(16).toString('hex')
+  // if (!('MUSIC_U' in query.cookie))
+  //   query.cookie._ntes_nuid = crypto.randomBytes(16).toString('hex')
   query.cookie.os = 'pc'
   const data = {
     ids: '[' + query.id + ']',