CLD-7841 Optimize E2E testing costs (#27883)

* Utilize free runners for E2E tests, report back to PR on run completion
* Increase test stability on smaller instances
* Merge worker reports
* merge start+prepare steps
* upgrade keycloak
* increase test timeouts
* Add video recording to report artifacts

Co-authored-by: Saturnino Abril <5334504+saturninoabril@users.noreply.github.com>

---------

Co-authored-by: Saturnino Abril <5334504+saturninoabril@users.noreply.github.com>

e2e-tests/cypress/tests/plugins/index.js

@@ -3,6 +3,8 @@
 
 /* eslint-disable no-console */
 
+const fs = require('fs');
+
 const clientRequest = require('./client_request');
 const {
     dbGetActiveUserSessions,
@@ -72,5 +74,19 @@ module.exports = (on, config) => {
         return launchOptions;
     });
 
+    // https://docs.cypress.io/guides/guides/screenshots-and-videos#Delete-videos-for-specs-without-failing-or-retried-tests
+    on('after:spec', (spec, results) => {
+        if (results && results.video) {
+            // Do we have failures for any retry attempts?
+            const failures = results.tests.some((test) =>
+                test.attempts.some((attempt) => attempt.state === 'failed'),
+            );
+            if (!failures) {
+                // delete the video if the spec passed and no tests retried
+                fs.unlinkSync(results.video);
+            }
+        }
+    });
+
     return config;
 };