salt: add a hash annotation to force restart backup server on certificate renewal

Author: ezekiel-alexrod

CHANGELOG.md

@@ -58,6 +58,9 @@
   [4.14.1](https://github.com/prometheus-community/helm-charts/releases/tag/prometheus-adapter-4.14.1)
   (PR[#4563](https://github.com/scality/metalk8s/pull/4563))
 
+- Add a hash annotation to force restart backup server on 
+  certifacate renewal (PR[#4590](https://github.com/scality/metalk8s/pull/4590))
+
 ## Release 129.0.3 (in development)
 
 ### Enhancements

salt/metalk8s/backup/deployed/deployment.sls

@@ -18,6 +18,9 @@ spec:
   replicas: 1
   template:
     metadata:
+      annotations:
+        checksum/config: __slot__:salt:metalk8s_kubernetes.get_object_digest(kind="ConfigMap",
+          apiVersion="v1", namespace="kube-system", name="backup-ca-cert", path="data")
       labels:
         app.kubernetes.io/name: backup
         app.kubernetes.io/part-of: metalk8s