Restructure and variablize config

terraform/variables.tf

@@ -3,7 +3,8 @@ variable "talos_version" {
 }
 
 variable "cluster_name" {
-  default = "dumpnet"
+  description = "Name used for cluster resources, S3 buckets, secrets, etc."
+  default     = "dumpnet"
 }
 
 variable "instance_type" {
@@ -19,8 +20,13 @@ variable "ami_id" {
   default     = "ami-000f1b0ad9d8ceafd"
 }
 
+variable "aws_region" {
+  description = "AWS region"
+  default     = "us-east-1"
+}
+
 variable "hosted_zone_id" {
-  description = "Route53 hosted zone ID for dumpnet.chat"
+  description = "Route53 hosted zone ID"
 }
 
 variable "domain" {
@@ -33,3 +39,13 @@ variable "dns_records" {
   type        = list(string)
   default     = ["argocd"]
 }
+
+variable "cert_manager_email" {
+  description = "Email for Let's Encrypt certificate notifications"
+  default     = "dumpnetcerts@keane.sh"
+}
+
+variable "state_bucket" {
+  description = "S3 bucket for Terraform remote state (set in backend config, documented here for reference)"
+  default     = "iankeane-tfstate"
+}