Updating mail and mini with annotation for default ingress class

k8s/mailu/mailu.secret.yml

@@ -5,6 +5,10 @@ domain: moritzgraf.de
 secretKey: fa5faeD9aegietaesahbiequ5Pe9au
 subnet: 10.233.0.0/16
 
+ingress:
+  annotations: 
+    kubernetes.io/ingress.class: nginx
+
 clamav:
   enabled: false
 front:
@@ -70,5 +74,6 @@ rspamd:
 certmanager:
   issuerType: ClusterIssuer
   issuerName: "letsencrypt-prod"
+  apiVersion: cert-manager.io/v1alpha2
 persistence:
   storageClass: openebs-hostpath