Remove hard dependence on facts for all nodes (#4304)

roles/etcd/tasks/join_etcd-events_member.yml

roles/etcd/tasks/join_etcd_member.yml

roles/etcd/templates/openssl.conf.j2

roles/kubernetes/master/tasks/kubeadm-setup.yml

...bernetes/master/templates/kubeadm-config.v1alpha1.yaml.j2

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

...bernetes/master/templates/kubeadm-config.v1alpha3.yaml.j2

...ubernetes/master/templates/kubeadm-config.v1beta1.yaml.j2

roles/kubernetes/node/defaults/main.yml

roles/kubernetes/node/templates/nginx.conf.j2

roles/kubernetes/preinstall/tasks/0090-etchosts.yml

roles/kubespray-defaults/defaults/main.yaml

roles/network_plugin/calico/rr/tasks/main.yml

roles/network_plugin/calico/tasks/install.yml

roles/network_plugin/contiv/defaults/main.yml

roles/network_plugin/flannel/defaults/main.yml