add namespace

clusters/ontime-dev/configs/issuer.yaml

@@ -2,6 +2,7 @@ apiVersion: cert-manager.io/v1
 kind: Issuer
 metadata:
   name: lets-encrypt-staging
+  namespace: kube-system
 spec:
   acme:
     server: https://acme-staging-v02.api.letsencrypt.org/directory