Change default for deploymentApiVersion to `apps/v1` (breaking change)
Switch default of
deploymentApiVersion: extensions/v1beta1 to new default
deploymentApiVersion: apps/v1. Switch planned for GitLab %13.0
In gitlab-org/gitlab#32720 (closed), we added support for changing
deploymentApiVersion. The ability to use
deploymentApiVersion: apps/v1 has been available since Kubernetes 1.9. Kubernetes 1.16 no longer will be serving extensions/v1beta1 deployments.