infra/gcp: Enable API services
infra/gcp: Enable API services

Enable a few API services:
- iam.googleapis.com: required to used dedicated service accounts for
  CloudBuild
- artifactregistry.googleapis.com: required to use Artifact Registry.
  mainly for the migration for GCR to AR
- policytroubleshooter.googleapis.com: enabled to troubleshoot IAM
  bindings

Signed-off-by: Arnaud Meukam <96190fcd0798f0afa72279990e31ddc33e4f2ea2@gmail.com>

kubernetes/k8s.io,kubernetes/k8s.io,kubernetes/k8s.io,kubernetes/k8s.io