[bitnami/etcd] Reuse etcd jwt token while upgrade (#12019)

Signed-off-by: Nobi <nobi@nobidev.com>

bitnami/etcd/Chart.yaml

@@ -24,4 +24,4 @@ name: etcd
 sources:
   - https://github.com/bitnami/containers/tree/main/bitnami/etcd
   - https://coreos.com/etcd/
-version: 8.5.1
+version: 8.5.2

bitnami/etcd/templates/_helpers.tpl

@@ -192,3 +192,14 @@ etcd: disasterRecovery
     Please enable persistence (--set persistence.enabled=true)
 {{- end -}}
 {{- end -}}
+
+{{- define "etcd.token.jwtToken" -}}
+{{- if (include "etcd.token.createSecret" .) -}}
+{{- $jwtToken := lookup "v1" "Secret" .Release.Namespace (printf "%s-jwt-token" (include "common.names.fullname" .)) -}}
+{{- if $jwtToken -}}
+{{ index $jwtToken "data" "jwt-token.pem" | b64dec }}
+{{- else -}}
+{{ genPrivateKey "rsa" }}
+{{- end -}}
+{{- end -}}
+{{- end -}}

bitnami/etcd/templates/token-secrets.yaml

@@ -10,5 +10,5 @@ metadata:
   {{- end }}
 type: Opaque
 data:
-  jwt-token.pem: {{ genPrivateKey "rsa" | b64enc | quote }}
+  jwt-token.pem: {{ include "etcd.token.jwtToken" . | b64enc | quote }}
 {{- end }}