software/kvm: Support "wrong" nat-rules in cluster

4 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed SlapOS.SlapRunner.ResilienceTest-Master

00:24:40

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

00:32:24

passed SlapOS.SoftwareReleases.IntegrationTest-Master.Python3

03:18:18

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

00:31:00