Add k8s v1.15.4 hashes (#5235)
Add k8s v1.15.4 hashes (#5235)


Atoms/kubespray,Atoms/kubespray,kubernetes-incubator/kubespray,kubernetes-incubator/kargo,Atoms/kubespray,kubernetes-sigs/kubespray,kubernetes-sigs/kubespray,kubernetes-incubator/kargo,kubernetes-sigs/kubespray,kubernetes-sigs/kubespray,Atoms/kubespray,kubernetes-incubator/kubespray