Helm Charts: add certificate duration and renewBefore options (#7563)

* Helm Charts: add certificate duration and renewBefore options

Signed-off-by: ohotnikov.ivan <ohotnikov.ivan@e-queo.net>

* use .Values.global.certificates instead

certificates ca

---------

Signed-off-by: ohotnikov.ivan <ohotnikov.ivan@e-queo.net>
Co-authored-by: ohotnikov.ivan <ohotnikov.ivan@e-queo.net>
Co-authored-by: Chris Lu <chris.lu@gmail.com>

k8s/charts/seaweedfs/values.yaml

@@ -22,6 +22,8 @@ global:
   serviceAccountName: "seaweedfs"
   automountServiceAccountToken: true
   certificates:
+    duration: 87600h
+    renewBefore: 720h
     alphacrds: false
   monitoring:
     enabled: false