chore(cloud-bench): adds failure tolerance and max concurrent count (#161)

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Author: sameer-in

modules/services/cloud-bench/main.tf

@@ -162,4 +162,8 @@ resource "aws_cloudformation_stack_set_instance" "stackset_instance" {
   deployment_targets {
     organizational_unit_ids = [for root in data.aws_organizations_organization.org[0].roots : root.id]
   }
+  operation_preferences {
+    failure_tolerance_count = 100
+    max_concurrent_count    = 5
+  }
 }