set a default template version

vars/main.yml

@@ -1,6 +1,7 @@
 ---
 # vars file for shokunin.ansible-cloud-consul
 cloud_consul_version: 0.7.2
+cloud_consul_template_version: 0.16.0
 cloud_consul_download_dir: /var/tmp/consul_dl
 cloud_consul_install_dir: /opt/consul
 consul_server_bind: false