feat: NFS provisioner + persistance Prometheus et Grafana

- k8s/infra/nfs-provisioner/ : nfs-subdir-external-provisioner v4.0.18
  StorageClass "nfs" (default), ReclaimPolicy=Retain, server=192.168.10.1
  path=/srv/data/nfs/k8s (export RAID5 déjà existant)
- k8s/apps-of-apps/apps/nfs-provisioner.yaml : Application ArgoCD
- monitoring/values.yaml : persistance activée
  Prometheus: 20Gi sur nfs, Grafana: 2Gi sur nfs

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

k8s/infra/nfs-provisioner/helmrelease.yaml

@@ -0,0 +1,28 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: nfs-provisioner
+  namespace: argocd
+  finalizers:
+    - resources-finalizer.argocd.argoproj.io
+spec:
+  project: default
+  sources:
+    - repoURL: https://kubernetes-sigs.github.io/nfs-subdir-external-provisioner/
+      chart: nfs-subdir-external-provisioner
+      targetRevision: 4.0.18
+      helm:
+        valueFiles:
+          - $values/k8s/infra/nfs-provisioner/values.yaml
+    - repoURL: git@github.com:Alkatrazz24/Funk-lab.git
+      targetRevision: main
+      ref: values
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: nfs-provisioner
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true

k8s/infra/nfs-provisioner/values.yaml

@@ -0,0 +1,16 @@
+nfs:
+  server: 192.168.10.1
+  path: /srv/data/nfs/k8s
+
+storageClass:
+  name: nfs
+  defaultClass: true
+  reclaimPolicy: Retain
+  archiveOnDelete: false
+
+resources:
+  requests:
+    cpu: 50m
+    memory: 64Mi
+  limits:
+    memory: 128Mi