Set retention period for backend checks result S3 bucket

The s3 bucket contains state information about the backend checks for a consignment whilst the checks are running

The data is transitory and does not need to be retained after completion of the checks

root_s3_object_lifecycle.tf

@@ -0,0 +1,15 @@
+locals {
+  default_expiration_days             = local.environment == "prod" ? 30 : 7
+  backend_checks_bucket_policy_status = local.environment == "intg" ? "Enabled" : "Disabled"
+}
+
+resource "aws_s3_bucket_lifecycle_configuration" "backend_checks_results_s3_bucket" {
+  bucket = module.backend_lambda_function_bucket.s3_bucket_id
+  rule {
+    id     = "delete-backend-checks-results-bucket-objects"
+    status = local.backend_checks_bucket_policy_status
+    expiration {
+      days = local.default_expiration_days
+    }
+  }
+}