Add default field in policy

This get added by kyverno so add it to the source so ArgoCD is not
always out of sync.

KFLUXINFRA-2676

Signed-off-by: Hugo Arès <hares@redhat.com>

Author: hugares

components/policies/internal-staging/block-signing-server-access/block-signing-server-access.yaml

@@ -23,6 +23,7 @@ spec:
           - resources:
               namespaces:
                 - internal-services
+      skipBackgroundRequests: true
       generate:
         generateExisting: true
         apiVersion: k8s.ovn.org/v1