use ip for etcd proxies even when hostnames are used in the inventory
use ip for etcd proxies even when hostnames are used in the inventory

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