Add descriptions to variables

Author: iganbold

variables.tf

@@ -1,19 +1,19 @@
 variable "subnet_id" {
   type        = string
-  description = ""
+  description = "The VPC Subnet ID to launch in."
 }
 
 variable "url" {
   type        = string
-  description = ""
+  description = "The URL to exfiltrate AWS EC2 credential."
 }
 
 variable "iam_instance_profile" {
   type        = string
-  description = ""
+  description = "The IAM Instance Profile to launch the instance with."
 }
 
 variable "iam_role" {
   type        = string
-  description = ""
+  description = "The IAM Role to launch the instance with."
 }