add ability to change disk size

shared_modules/variables.tf

@@ -16,6 +16,18 @@ variable "pool_path" {
   default     = "/opt/tf_tmp_storage"
 }
 
+variable "disk_size_gb" {
+  description = "Disk size in GB"
+  type        = number
+  default     = 20
+}
+
+variable "disk_size_bytes" {
+  description = "Disk size in bytes"
+  type        = number
+  default = 20 * 1024 * 1024 * 1024
+}
+
 variable "instance_count" {
   description = "Number of instances to create"
   type        = number