crds: patch in api-approved label through Kustomization

This was taken from the `kustomization.yaml` found in the
`container-object-storage-interface-controller` repository which in turn
deploys these CRDs.

See: https://github.com/kubernetes-sigs/container-object-storage-interface-controller/blob/f6867a078f0b6254aadd61987e103174bfa6b870/deploy/base/kustomization.yaml#L18

Author: NicolasT

Diff for: crds/kustomization.yaml

@@ -9,3 +9,14 @@ resources:
   - objectstorage.k8s.io_bucketclasses.yaml
   - objectstorage.k8s.io_bucketrequests.yaml
   - objectstorage.k8s.io_buckets.yaml
+
+patches:
+# CRDs
+- target:
+    kind: CustomResourceDefinition
+  patch: |-
+    - op: add
+      path: /metadata/annotations
+      value:
+        controller-gen.kubebuilder.io/version: (devel)
+        api-approved.kubernetes.io: https://github.com/kubernetes-sigs/container-object-storage-interface-api/pull/2