container_manager variable to specify runtime.

cluster.yml

docs/cri-o.md

inventory/sample/group_vars/k8s-cluster.yml

...ernetes/kubeadm/templates/kubeadm-client.conf.v1alpha2.j2

...bernetes/master/templates/kubeadm-config.v1alpha2.yaml.j2

roles/kubernetes/node/templates/kubelet.kubeadm.env.j2

roles/kubernetes/node/templates/kubelet.standard.env.j2

roles/kubespray-defaults/defaults/main.yaml

roles/reset/tasks/main.yml

scale.yml

upgrade-cluster.yml