fix: New release with optional tag var

Author: kuntalkumarbasu

examples/full_integration/main.tf

@@ -26,7 +26,7 @@ data "aws_caller_identity" "current" {}
 
 module "datadog" {
   source          = "scribd/datadog/aws"
-  version         = "~>1"
+  version         = "~>3"
   aws_region      = var.aws_region
   datadog_api_key = var.dd_api_key
   aws_account_id  = data.aws_caller_identity.current.account_id
@@ -35,4 +35,7 @@ module "datadog" {
   cloudtrail_bucket_arn = "S3_BUCKET_ARN"
 
   cloudwatch_log_groups = ["cloudwatch_log_group_1", "cloudwatch_log_group_2"]
+  tags = {
+    Module = "scribd/datadog/aws"
+  }
 }