Use helm 3 in review app deployment scripts

Part of #212529 (closed)

1. Change review-deploy, review-stop, review-stop-failed-deployment to use helm 3
2. Keep review-cleanup to use helm 2 for cleaning up helm 2 review apps
3. Delete dns-gitlab-review-app manually
4. Install a new dns-gitlab-review-app using helm 3 into the same release name dns-gitlab-review-app