Terraform模块创建VPC 用于创建VPC module "three-tier" { source = "../" region = "us-east-1" cidr_block = "10.0.0.0/16" public_cidr1 = "10.0.101.0/24" public_cidr2 = "10.0.102.0/24" public_cidr3 = "10.0.103.0/24" private_cidr