feat(base): adding zalando postgresql operator

base/kustomization.yaml

@@ -4,6 +4,7 @@ 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
+  - ./postgresql
   - ./metallb
   - ./minio
   - ./nginx

base/postgresql/kustomization.yaml

@@ -0,0 +1,10 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: postgresql-operator
+
+resources:
+  - namespace.yaml
+  - github.com/zalando/postgres-operator/manifests
+  - github.com/zalando/postgres-operator/ui/manifests
+
+

base/postgresql/namespace.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: postgresql-operator