Auto merge of #3174 - Turbo87:locale-test, r=pichfl

tests/front-page: Override locale to make download count test pass

When running the testsuite locally, this test was failing due to my browser using the German locale for formatting instead. This PR forces the `intl` service in the test to explicitly use the `en` locale for formatting instead.

r? `@pichfl`

Author: bors

tests/acceptance/front-page-test.js

@@ -17,6 +17,8 @@ module('Acceptance | front page', function (hooks) {
   setupMirage(hooks);
 
   test('visiting /', async function (assert) {
+    this.owner.lookup('service:intl').locale = 'en';
+
     this.server.loadFixtures();
 
     await visit('/');