* Fix a deadlock in kubeadm master initialization. ([#43835](https://github.com/kubernetes/kubernetes/pull/43835), [@mikedanese](https://github.com/mikedanese))
* Use Cluster Autoscaler 0.5.1, which fixes an issue in Cluster Autoscaler 0.5 where the cluster may be scaled up unnecessarily. Also the status of Cluster Autoscaler is now exposed in kube-system/cluster-autoscaler-status config map. ([#43745](https://github.com/kubernetes/kubernetes/pull/43745), [@mwielgus](https://github.com/mwielgus))