Investigate `review-deploy` that takes more than 15 minutes to finish

As we can see in https://gitlab.com/gitlab-org/gitlab/-/jobs/314545008, review-deploy took 33 minutes to finish, even though the Review App was deployed successfully (i.e. in less than 15 minutes). By looking at the timestamps for the job's steps:

The prepare-executor section started at Time.at(1570529032) => 2019-10-08 12:03:52 +0200
The prepare-script section started at Time.at(1570529041) => 2019-10-08 12:04:01 +0200
The get-sources section started at Time.at(1570529044) => 2019-10-08 12:04:04 +0200
The restore-cache section started at Time.at(1570529060) => 2019-10-08 12:04:20 +0200
The download-artifacts section started at Time.at(1570529062) => 2019-10-08 12:04:22 +0200
The build-script section started at Time.at(1570529065) => 2019-10-08 12:04:25 +0200
The after-script section started at Time.at(1570531043) => 2019-10-08 12:37:23 +0200
The archive-cache section started at Time.at(1570531045) => 2019-10-08 12:37:25 +0200
The upload-artifacts-on-success section started at Time.at(1570531047) => 2019-10-08 12:37:27 +0200

So we can see that the build-script section indeed took 33 minutes to complete but we don't have the detailed duration for each step. What we know is that the deploy step cannot take more than 15 minutes. That leaves 18 minutes for the install_api_client_dependencies_with_apk , check_kube_domain , ensure_namespace , install_tiller , install_external_dns , download_chart , and add_license.

We could add date calls between each steps...