Add warning about VPC usage charges in automation (#5170)

cli/src/pcluster/cli/commands/configure/easyconfig.py

@@ -341,7 +341,18 @@ def _create_vpc_parameters(scheduler, head_node_instance_type, compute_instance_
  vpc_list = vpc_and_subnets["vpc_list"]
  if not vpc_list:
  print("There are no VPC for the given region. Starting automatic creation of VPC and subnets...")
- if not vpc_list or prompt("Automate VPC creation? (y/n)", lambda x: x in ("y", "n"), default_value="n") == "y":
+ if (
+ not vpc_list
+ or prompt(
+ "The creation of the VPC will result in minimal charges for NAT gateway \n"
+ "creation using a public subnet that are not covered under the free tier.\n"
+ "Please refer to https://aws.amazon.com/vpc/pricing/ for more details.\n"
+ "Automate VPC creation? (y/n)",
+ lambda x: x in ("y", "n"),
+ default_value="n",
+ )
+ == "y"
+ ):
  vpc_parameters.update(
  automate_vpc_with_subnet_creation(
  _choose_network_configuration(scheduler, head_node_instance_type, compute_instance_types),