fix(kubernetes): remove patch-containerd secret lookup

The patch-containerd mechanism copied the secret from cozy-system
into each tenant namespace and then looked it up during template
rendering. This is no longer needed.

Remove the copy-patch-containerd.yaml template and the corresponding
lookup block in cluster.yaml.

Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Andrei Kvapil <kvapss@gmail.com>

packages/apps/kubernetes/templates/cluster.yaml

@@ -227,18 +227,6 @@ spec:
       - ["LABEL=ephemeral", "/ephemeral"]
       - ["/ephemeral/kubelet", "/var/lib/kubelet", "none", "bind,nofail"]
       - ["/ephemeral/containerd", "/var/lib/containerd", "none", "bind,nofail"]
-      {{- $sec := lookup "v1" "Secret" $.Release.Namespace (printf "%s-patch-containerd" $.Release.Name) }}
-      {{- if $sec }}
-      files:
-        {{- range $key, $_ := $sec.data }}
-        - path: /etc/containerd/certs.d/{{ trimSuffix ".toml" $key }}/hosts.toml
-          contentFrom:
-            secret:
-              name: {{ $.Release.Name }}-patch-containerd
-              key: {{ $key }}
-          permissions: "0400"
-        {{- end }}
-      {{- end }}
       preKubeadmCommands:
       - KUBELET_VERSION={{ include "kubernetes.versionMap" $}} /usr/bin/update-k8s.sh || true
       - sed -i 's|root:x:|root::|' /etc/passwd

packages/apps/kubernetes/templates/copy-patch-containerd.yaml

@@ -1,13 +0,0 @@
-{{- $sourceSecret := lookup "v1" "Secret" "cozy-system" "patch-containerd" }}
-{{- if $sourceSecret }}
-apiVersion: v1
-kind: Secret
-metadata:
-  name: {{ .Release.Name }}-patch-containerd
-  namespace: {{ .Release.Namespace }}
-type: {{ $sourceSecret.type }}
-data:
-{{- range $key, $value := $sourceSecret.data }}
-  {{ printf "%s: %s" $key ($value | quote) | indent 2 }}
-{{- end }}
-{{- end }}