Support conformance env lifecycle in GCP CI Cloud Build

Author: roger2hk

deployment/modules/gcp/cloudrun/iam/outputs.tf

@@ -31,6 +31,7 @@ module "cloudrun_iam" {
   log_spanner_db              = var.log_spanner_db
   dedup_spanner_db            = var.dedup_spanner_db
 
+  # Skip this Cloud Run IAM module if skip_iam is true.
   count = var.skip_iam ? 0 : 1
 }