Kustomize ValidatingAdmissionPolicyBinding

This is a workaround for kustomize issue where it does not prefix
`ValidatingAdmissionPolicy`'s name in `ValidatingAdmissionPolicyBinding`'s field `spec.policyName`.

Instead of using `namePrefix` in `kustomization.yaml` we use `PrefixSuffixTransformer` with
custom `fieldSpecs`.

Signed-off-by: Mikalai Radchuk <mradchuk@redhat.com>

config/default/kustomization.yaml

@@ -6,7 +6,20 @@ namespace: operator-controller-system
 # "wordpress" becomes "alices-wordpress".
 # Note that it should also match with the prefix (text before '-') of the namespace
 # field above.
-namePrefix: operator-controller-
+transformers:
+# This can be replaced by namePrefix once kustomize has support for ValidatingAdmissionPolicyBinding
+# https://github.com/kubernetes-sigs/kustomize/issues/5674
+- |-
+  apiVersion: builtin
+  kind: PrefixSuffixTransformer
+  metadata:
+    name: prefix-all-names
+  prefix: operator-controller-
+  fieldSpecs:
+    - path: metadata/name
+    - group: admissionregistration.k8s.io
+      kind: ValidatingAdmissionPolicyBinding
+      path: spec/policyName
 
 # Labels to add to all resources and selectors.
 #labels: