Static manifest generation uses kustomize instead of python (#8099)

* regenerate at 4.0.12

* bash for loop and static values files

* add .tool-versions

* fixup static manifests with kustomize instead of python

* remove spec.replicas where set

* generate manifests for all supported versions

* update docs

* remove all versions except default (1.20) for now

* update to 1.1.1/4.0.15

hack/manifest-templates/provider/cloud/kustomization.yaml

@@ -0,0 +1,4 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- ../../common