use the @cloudron/superagent module

src/routes/test/cloudron-test.js

@@ -8,7 +8,7 @@
 const constants = require('../../constants.js'),
     common = require('./common.js'),
     expect = require('expect.js'),
-    superagent = require('../../superagent.js');
+    superagent = require('@cloudron/superagent');
 
 describe('Cloudron', function () {
     const { setup, cleanup, serverUrl, owner, user, dashboardFqdn } = common;