crds: add kustomization.yaml

This `kustomization` simply lists all CRD manifests. As such it can be
referred to from other layers to import/include all CRDs in another
rendering.

Author: NicolasT

Diff for: crds/kustomization.yaml

@@ -0,0 +1,11 @@
+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - objectstorage.k8s.io_bucketaccesses.yaml
+  - objectstorage.k8s.io_bucketaccessclasses.yaml
+  - objectstorage.k8s.io_bucketaccessrequests.yaml
+  - objectstorage.k8s.io_bucketclasses.yaml
+  - objectstorage.k8s.io_bucketrequests.yaml
+  - objectstorage.k8s.io_buckets.yaml