Fix reverse DNS lookups of service IPs.
Fix reverse DNS lookups of service IPs.

This fixes "DNS should provide DNS for services [Conformance]"
e2e test in k8s.

rogerwelin/kargo,jcsirot/kubespray,insequent/kargo,Abdelsalam-Abbas/kubespray_fork,sgm-media/kargo,kubernetes-incubator/kargo,insequent/kargo,kubernetes-incubator/kargo,kubernetes-sigs/kubespray,galthaus/setup-kubernetes,rogerwelin/kargo,VincentS/kargo,jcsirot/kubespray,hatch-k8s/kargo,Atoms/kubespray,kubernetes-sigs/kubespray,Lendico/kargo,Atoms/kubespray,kubernetes-sigs/kubespray,kubespray/kargo,kubernetes-sigs/kubespray,ayaz/kubespray,Atoms/kubespray,kubernetes-incubator/kubespray,Abdelsalam-Abbas/kubespray_fork,hatch-k8s/kargo,galthaus/setup-kubernetes,Atoms/kubespray,ayaz/kubespray,sgm-media/kargo,VincentS/kargo,kubespray/kargo,kubernetes-incubator/kubespray,Lendico/kargo