Move /e2e -> /e2e-tests

e2e-tests/cypress/tests/support/api/helpers.js

@@ -0,0 +1,15 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+export function buildQueryString(queryParams = {}) {
+    let queryString = '';
+    Object.entries(queryParams).forEach(([k, v], index) => {
+        if (index > 0) {
+            queryString += '&';
+        }
+
+        queryString += `${k}=${encodeURIComponent(v)}`;
+    });
+
+    return queryString;
+}