Refactor to use WMF gitlab-terraform-images/blubber/kokkuri
Use gitlab-terraform-images
from the WMF container registry.
Run all jobs on protected runners to prevent leaks of Digital Ocean token and k8s config.
Export kube config from terraform instead of relying on base64 encoded variable.
Build a deployer image using blubber/kokkuri that contains helm dependencies.
Bug: T322344