Remote cluster - Functional UI test to change the superuser to a test…

…_user with limited role (#77212)

* wip - remote cluster

* update chromedriver to 85

* remote cluster test_user

* Revert "update chromedriver to 85"

This reverts commit 4abbc54.

Co-authored-by: Dzmitry Lemechko <dzmitry.lemechko@elastic.co>
Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

x-pack/test/functional/apps/remote_clusters/home_page.ts

@@ -9,12 +9,18 @@ import { FtrProviderContext } from '../../ftr_provider_context';
 
 export default ({ getPageObjects, getService }: FtrProviderContext) => {
   const pageObjects = getPageObjects(['common', 'remoteClusters']);
+  const security = getService('security');
 
   describe('Home page', function () {
     before(async () => {
+      await security.testUser.setRoles(['global_ccr_role']);
       await pageObjects.common.navigateToApp('remoteClusters');
     });
 
+    after(async () => {
+      await security.testUser.restoreDefaults();
+    });
+
     it('Loads the app', async () => {
       const remoteClusterButton = await pageObjects.remoteClusters.remoteClusterCreateButton();
       expect(await remoteClusterButton.isDisplayed()).to.be(true);

x-pack/test/functional/apps/remote_clusters/index.ts

@@ -6,6 +6,9 @@
 
 import { FtrProviderContext } from '../../ftr_provider_context';
 
+// refer to the below docs for CCR, Remote Clusters
+// https://www.elastic.co/guide/en/elasticsearch/reference/current/ccr-getting-started.html#ccr-getting-started-prerequisites
+// https://www.elastic.co/guide/en/kibana/7.9/working-remote-clusters.html
 export default ({ loadTestFile }: FtrProviderContext) => {
   describe('Remote Clusters app', function () {
     this.tags(['ciGroup4', 'skipCloud']);

x-pack/test/functional/config.js

@@ -334,6 +334,7 @@ export default async function ({ readConfigFile }) {
           ],
         },
 
+        // using this role even for remote clusters
         global_ccr_role: {
           elasticsearch: {
             cluster: ['manage', 'manage_ccr'],