Add metric_treat_missing_data variable to examples/complete

Author: joe-niland

examples/complete/fixtures.us-east-2.tfvars

@@ -55,3 +55,5 @@ security_group_rules = [
 ]
 
 ssh_public_key_path = "/secrets"
+
+metric_treat_missing_data = "notBreaching"

examples/complete/variables.tf

@@ -46,3 +46,13 @@ variable "tenancy" {
     error_message = "Tenancy field can only be one of default, dedicated, host"
   }
 }
+
+variable "metric_treat_missing_data" {
+  type        = string
+  description = "Sets how this alarm is to handle missing data points. The following values are supported: `missing`, `ignore`, `breaching` and `notBreaching`. Defaults to `missing`."
+  default     = "missing"
+  validation {
+    condition     = contains(["missing", "ignore", "breaching", "notBreaching"], var.metric_treat_missing_data)
+    error_message = "The value of metric_treat_missing_data must be one of the following: \"missing\", \"ignore\", \"breaching\", and \"notBreaching\"."
+  }
+}