Install redis-operator in cluster archive-staging-rke2

Refs. swh/infra/sysadm-environment#4809

archive-staging-rke2/namespaces.yaml

@@ -48,3 +48,8 @@ apiVersion: v1
 kind: Namespace
 metadata:
   name: software-stories
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: redis

argocd-configuration/applications/archive-staging-rke2/redis-operator.yaml

+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: archive-staging-rke2-redis-operator
+  namespace: argocd
+spec:
+  project: default
+  source:
+    chart: redis-operator
+    repoURL: 'https://ot-container-kit.github.io/helm-charts/'
+    targetRevision: 0.14.3
+    helm:
+      releaseName: redis-operator
+  destination:
+    server: https://rancher.euwest.azure.internal.softwareheritage.org/k8s/clusters/c-m-9n5h9nrf
+    namespace: redis
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+
+