Make the generated key persistent

Author: paolomainardi

deployment/chart/templates/secrets.yaml

@@ -2,6 +2,8 @@ apiVersion: v1
 kind: Secret
 metadata:
   name: {{ include "code-server.fullname" . }}
+  annotations:
+    "helm.sh/hook": "pre-install"
   labels:
     app.kubernetes.io/name: {{ include "code-server.name" . }}
     helm.sh/chart: {{ include "code-server.chart" . }}