added external net var

ood-instance/main.tf

-variable "flavor" {default = "m1.medium"}
+variable "flavor" {default = "string"}
 variable "floating_ip_ood" {type = string}
-variable "host_prefix" {default = "164.111.161.%s"}
-variable "image_ood" {default = "CentOS-7-x86_64-GenericCloud-1905"}
-variable "internal_net" {default = "clusternet"}
+variable "host_prefix" {default = "string"}
+variable "image_ood" {default = "string"}
+variable "internal_net" {default = "string"}
+variable "external_net" {default = "string"}
 variable "internal_subnet_id" {type = "string"}
 variable "key_pair" {type = "string"}
 variable "ood_instance_name" { default = "string"}
@@ -12,7 +13,7 @@ variable "ssh_private_key" {default = "string"}
 
 # creates details for the OOD instance
 resource "openstack_compute_instance_v2" "ood" {
-  depends_on      = [var.internal_subnet-id]
+  depends_on      = [var.internal_subnet_id]
   name            = var.ood_instance_name
   image_name      = var.image_ood
   flavor_name     = var.flavor