Return back public_subnets that is required when create_igw=true (#1005)

Author: alexott

docs/guides/aws-workspace.md

@@ -130,6 +130,7 @@ module "vpc" {
   single_nat_gateway   = true
   create_igw           = true
 
+  public_subnets  = [cidrsubnet(var.cidr_block, 3, 0)]
   private_subnets = [cidrsubnet(var.cidr_block, 3, 1),
   cidrsubnet(var.cidr_block, 3, 2)]
 

docs/resources/mws_networks.md

@@ -38,6 +38,7 @@ module "vpc" {
   enable_nat_gateway   = true
   create_igw           = true
 
+  public_subnets  = [cidrsubnet(var.cidr_block, 3, 0)]
   private_subnets = [cidrsubnet(var.cidr_block, 3, 1),
   cidrsubnet(var.cidr_block, 3, 2)]