container_manager variable to specify runtime.

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

@@ -34,10 +34,10 @@ KUBELET_HOSTNAME="--hostname-override={{ kube_override_hostname }}"
 --node-status-update-frequency={{ kubelet_status_update_frequency }} \
 --cgroup-driver={{ kubelet_cgroup_driver|default(kubelet_cgroup_driver_detected) }} \
 --max-pods={{ kubelet_max_pods }} \
-{% if manage_docker %}
+{% if container_manager == 'docker' %}
 --docker-disable-shared-pid={{ kubelet_disable_shared_pid }} \
 {% endif %}
-{% if manage_crio %}
+{% if container_manager == 'crio' %}
 --container-runtime=remote \
 --container-runtime-endpoint=/var/run/crio/crio.sock \
 {% endif %}