Use local chart for etcd where secretStringData can be set.

With the breaking change in etcd-backup-restore the credentials for our
etcd backup can not be passed over the ENV anymore. Therefore we
introduced a new method to pass them over helm values.

See: https://github.com/gardener/etcd-backup-restore/releases/tag/v0.19.0

This commit can be dropped whenever it is contributed upstream in
gardener-community/etcd helm chart.

gardener/etcd.yaml

@@ -15,11 +15,10 @@ spec:
     - name: certificates
   chart:
     spec:
-      chart: etcd
-      version: 6.2.0
+      chart: ./helmcharts/etcd
       sourceRef:
-        kind: HelmRepository
-        name: gardener-community-charts
+        kind: GitRepository
+        name: yake
         namespace: flux-system
       interval: 1m
   valuesFrom:

helmcharts/etcd/templates/secret-etcd-backup.yaml

@@ -19,6 +19,8 @@ metadata:
   name: {{ .Values.name }}-backup
   namespace: {{ .Release.Namespace }}
 type: Opaque
+stringData:
+{{- toYaml .Values.backup.secretStringData | nindent 2 }}
 data:
 {{ toYaml .Values.backup.secretData | indent 2 }}
 

helmcharts/etcd/values.yaml

@@ -3,6 +3,7 @@ backup:
     maxBackups: 7
     schedule: 0 */24 * * *
     secretData: {}
+    secretStringData: {}
     storageContainer: ""
     storageProvider: ""
     volumeMounts: []