Merge pull request #1 from kubespray/master

roles/docker/vars/ubuntu-16.04.yml

roles/docker/vars/ubuntu.yml

roles/download/defaults/main.yml

roles/download/tasks/main.yml

roles/download/vars/kube_versions.yml

roles/etcd/defaults/main.yml

roles/etcd/handlers/main.yml

roles/etcd/meta/main.yml

roles/etcd/tasks/configure.yml

roles/etcd/tasks/install.yml

roles/etcd/tasks/main.yml

roles/etcd/tasks/refresh_config.yml

roles/etcd/tasks/set_cluster_health.yml

roles/etcd/tasks/set_facts.yml

roles/etcd/templates/deb-etcd-docker.initd.j2

roles/etcd/templates/deb-etcd-host.initd.j2

roles/etcd/templates/deb-etcd-proxy-docker.initd.j2

roles/etcd/templates/deb-etcd-proxy-host.initd.j2

roles/etcd/templates/etcd-docker.service.j2

roles/etcd/templates/etcd-host.service.j2