v1.0.3

`docker-openvpn-server/cluster`: Optional output for EIP
- worked through https://www.terraform.io/upgrade-guides/0-11.html#referencing-attributes-from-resources-with-count-0
to get eip alloc id output

docker-openvpn-server/cluster/outputs.tf

@@ -6,3 +6,7 @@ output "vpn_server_sg_id" {
 output "role_id_openvpn" {
   value = "${aws_iam_role.role.unique_id}"
 }
+
+output "vpn_server_eip_id" {
+  value = "${element(concat(aws_eip.openvpn_eip.*.id, list("")), 0)}"
+}