use another dns server

test/new-user-test.js

@@ -12,6 +12,7 @@ var AppStore = require('../appstore.js'),
     async = require('async'),
     Cloudron = require('../cloudron.js'),
     common = require('../common.js'),
+    dns = require('dns'),
     request = require('superagent-sync'),
     semver = require('semver');
 
@@ -98,6 +99,8 @@ describe('Appstore new user flow', function () {
     });
 
     it('has setup DNS records cleaned up', function (done) {
+        dns.setServers([ '8.8.8.8' ]); // use different dns server so as to not get cached results
+
         function expectError(tag, fn) {
             return function (cb) {
                 fn(function (error) {