expose with_public_ip var of metadata service (#42)

* expose with_public_ip var of metadata service

* add readme description

* new line to conform with linter

README.md

@@ -122,6 +122,7 @@ You can find a more complete example that uses this module but also includes set
 | <a name="input_ui_static_container_image"></a> [ui\_static\_container\_image](#input\_ui\_static\_container\_image) | Container image for the UI frontend app | `string` | `""` | no |
 | <a name="input_vpc_cidr_blocks"></a> [vpc\_cidr\_blocks](#input\_vpc\_cidr\_blocks) | The VPC CIDR blocks that we'll access list on our Metadata Service API to allow all internal communications | `list(string)` | n/a | yes |
 | <a name="input_vpc_id"></a> [vpc\_id](#input\_vpc\_id) | The id of the single VPC we stood up for all Metaflow resources to exist in. | `string` | n/a | yes |
+| <a name="with_public_ip"></a> [with\_public\_ip](#input\_with\_public\_ip) | Use public IP in case if Metadata Service uses public subnets (by defualt private subnets are used). | `bool` | `false` | no |
 
 ## Outputs
 

main.tf

@@ -33,6 +33,7 @@ module "metaflow-metadata-service" {
   subnet1_id                       = var.subnet1_id
   subnet2_id                       = var.subnet2_id
   vpc_cidr_blocks                  = var.vpc_cidr_blocks
+  with_public_ip                   = var.with_public_ip
 
   standard_tags = var.tags
 }

variables.tf

@@ -159,3 +159,9 @@ variable "extra_ui_static_env_vars" {
   default     = {}
   description = "Additional environment variables for UI static app"
 }
+
+variable "with_public_ip" {
+  type        = bool
+  default     = false
+  description = "Enable public IP assignment for the Metadata Service"
+}