(chore) clean up code.

main.tf

@@ -1,9 +1,9 @@
 module "ecs-windows" {
   source	= "jjno91/ecs-windows/aws"
   version	= "0.1.0"
-  instance_type	= "t3.medium"
+  env		= vars.environment
+  min_size	= vars.scaling['min']
+  max_size	= vars.scaling['max']
+  instance_type	= vars.instance_type
   tags		= vars.aws_labels
-  min_size	= 0
-  max_size	= 1
-  env		= "ustx-dev-lab"
 }

variables.tf

@@ -1,10 +1,13 @@
-variable "keypair"         { default = "${env.AWS_KEYPAIR_NAME}"
-variable "instance_type"   { default = "t2.micro" }
-variable "security_groups" { default = "${env.AWS_SECURITY_GROUPS}" }
-variable "monitoring"      { default = true }
-variable "ami_id"          { default = "ami-fa05b392" }
-variable "subnet_id"       { default = "${env.AWS_SUBNET}" }
+variable "environment"     { default = "ustx-dev-lab" }
+variable "instance_type"   { default = "t2.medium" }
 variable "region"          { default = "${env.AWS_DEFAULT_REGION}" }
+variable "monitoring"      { default = true }
+variable "scaling"	   {
+      type    = "map"
+      default = {
+            "min"    = 0
+            "max"    = 1
+}
 variable "aws_labels"      { 
       type = "map"
       default = {