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When doing the very first upgrade from a cluster that contains the source of truth in the ClusterStatus struct, the new kubeadm logic will try to retrieve this information from annotations. This changeset adds to both etcd and apiserver endpoint retrieval the special case in which they won't retry if we are in such cases. The logic will retry if we find any unknown error, but will not retry in the following cases: - etcd annotations do not contain etcd endpoints, but the overall list of etcd pods is greater than 0. This means that we listed at least one etcd pod, but they are missing the annotation. - API server annotation is not found on the api server pod for a given node name, but no errors aside from that one were found. This means that the API server pod is present, but is missing the annotation. In both cases there is no point in retrying, and so, this speeds up the upgrade path when coming from a previous existing cluster.