Add live end-to-end DNS zone Terraform example

examples/live_end_to_end_dns_zone/variables.tf

@@ -0,0 +1,22 @@
+variable "dynu_api_key" {
+  description = "Dynu API key. Leave null to use DYNU_API_KEY from environment."
+  type        = string
+  default     = null
+  sensitive   = true
+}
+
+variable "test_domain" {
+  type        = string
+  description = "Disposable Dynu test domain to create and destroy during live end-to-end testing."
+
+  validation {
+    condition     = trimspace(var.test_domain) != ""
+    error_message = "test_domain must be a non-empty domain name."
+  }
+}
+
+variable "test_ttl" {
+  description = "TTL in seconds for disposable DNS records. Must be 0 (provider/API default) or >= 90."
+  type        = number
+  default     = 300
+}