use ansible_service_mgr to detect init system

roles/etcd/handlers/main.yml

roles/etcd/tasks/configure.yml

roles/kubernetes/master/tasks/main.yml

roles/kubernetes/master/tasks/start.yml

roles/kubernetes/master/templates/kube-apiserver.j2

roles/kubernetes/node/handlers/main.yml

roles/kubernetes/node/tasks/install.yml

roles/kubernetes/node/templates/kubelet.j2

roles/kubernetes/preinstall/tasks/main.yml

roles/network_plugin/calico/handlers/main.yml

roles/network_plugin/calico/tasks/main.yml

roles/network_plugin/calico/templates/docker

roles/network_plugin/flannel/handlers/main.yml

roles/network_plugin/flannel/tasks/main.yml

roles/network_plugin/flannel/templates/docker

roles/network_plugin/weave/handlers/main.yml

roles/network_plugin/weave/tasks/main.yml