This release includes the following changes:
- NetworkManager lists must be separated by , (#6649)
- Move from widehat.opensuse to download.opensuse for crio centos (#6682)
- fix kubelet_flexvolumes_plugins_dir undefined (#6670)
- Add Kubernetes hashes 1.19.2/1.18.9/1.17.12 and set default (#6699)
- Make sure node_ip is set if node is in etcd group (#6720)
- properly generate extravolumes in kubeadmconfig for centos (#6707)