feat(base): adding zalando postgresql operator

base/kustomization.yaml

@@ -4,6 +4,8 @@ kind: Kustomization
 bases:
   - https://raw.githubusercontent.com/flannel-io/flannel/master/Documentation/kube-flannel.yml
   - https://github.com/cert-manager/cert-manager/releases/download/v1.10.0/cert-manager.yaml
+  - github.com/zalando/postgres-operator/manifests
+  - github.com/zalando/postgres-operator/ui/manifests
   - ./metallb
   - ./minio
   - ./nginx