Merge pull request #798 from mattymo/perhostssl7

roles/etcd/files/make-ssl-etcd.sh

roles/etcd/tasks/check_certs.yml

roles/etcd/tasks/gen_certs.yml

roles/etcd/tasks/main.yml

roles/etcd/tasks/pre_upgrade.yml

roles/etcd/templates/etcd.j2

...es-apps/ansible/templates/calico-policy-controller.yml.j2

roles/kubernetes/master/tasks/pre-upgrade.yml

...tes/master/templates/manifests/kube-apiserver.manifest.j2

roles/network_plugin/calico/tasks/main.yml

roles/network_plugin/calico/templates/cni-calico.conf.j2

roles/network_plugin/canal/tasks/main.yml

roles/network_plugin/flannel/templates/flannel-pod.yml