feat: Separate config for production/testing

controllers/longhorn/base/kustomization.yaml

@@ -0,0 +1,15 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - namespace.yaml
+  - helm-repository.yaml
+  - helm-release.yaml
+
+configurations:
+  - name-reference.yaml
+
+configMapGenerator:
+  - name: values-base
+    namespace: longhorn-system
+    files:
+      - values.yaml