Add VPA CRDs + kubeconform schemas (vpa-system app, CRDs only)

apps/base/vpa-system/kustomization.yaml

@@ -0,0 +1,12 @@
+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - namespace.yaml
+  # VPA CRDs (verticalpodautoscalers + verticalpodautoscalercheckpoints) from
+  # the kubernetes/autoscaler repo at the pinned release tag, served through the
+  # artifactapi github remote (pattern allowlisted in terraform-artifactapi#14).
+  # The recommender deployment lands separately once these CRDs (and their
+  # kubeconform schemas under schemas/autoscaling.k8s.io/) are in.
+  - https://artifactapi.k8s.syd1.au.unkin.net/api/v1/remote/github/kubernetes/autoscaler/raw/vertical-pod-autoscaler-1.7.0/vertical-pod-autoscaler/deploy/vpa-v1-crd-gen.yaml

apps/base/vpa-system/namespace.yaml

@@ -0,0 +1,5 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: vpa-system