GetControlPlaneImages returns a list of container images kubeadm expects to use on a control plane node
GetDNSImage generates and returns the image for the DNS, that can be CoreDNS or kube-dns. Given that kube-dns uses 3 containers, an additional imageName parameter was added
GetEtcdImage generates and returns the image for etcd
GetGenericImage generates and returns a platform agnostic image (backed by manifest list)
GetKubernetesImage generates and returns the image for the components managed in the Kubernetes main repository, including the control-plane components and kube-proxy. If specified, the HyperKube image will be used.
GetPauseImage returns the image for the "pause" container