chore: Add dummy security kustomization (only namespace).

kubernetes/apps/observability/kube-prometheus-stack/app.ks.yaml

@@ -4,7 +4,7 @@ kind: Kustomization
 metadata:
   name: kube-prometheus-stack
 spec:
-  path: ./kubernetes/apps/monitoring-system/kube-prometheus-stack/app
+  path: ./kubernetes/apps/observability/kube-prometheus-stack/app
   sourceRef:
     kind: GitRepository
     name: flux-system

kubernetes/apps/security/kustomization.yaml

@@ -1,3 +1,11 @@
+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: system-upgrade
+
+resources:
+  - ./namespace.yaml
+
 # External secrets should be implemented.
 # Most popular is 1password, but it's paid
 # https://github.com/tholinka/home-ops implements secrets via bitwarden (which is free)

kubernetes/apps/security/namespace.yaml

@@ -0,0 +1,7 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: _
+  annotations:
+    kustomize.toolkit.fluxcd.io/prune: disabled