feat: Add labels to VPN tunnel (#76)

* Add labels

* new line at end

* terraform fmt

modules/vpn_ha/README.md

@@ -132,6 +132,7 @@ module "vpn_ha" {
 | Name | Description | Type | Default | Required |
 |------|-------------|------|---------|:--------:|
 | create\_vpn\_gateway | create a VPN gateway | `bool` | `true` | no |
+| labels | Labels for vpn components | `map(string)` | `{}` | no |
 | name | VPN gateway name, and prefix used for dependent resources. | `string` | n/a | yes |
 | network | VPC used for the gateway and routes. | `string` | n/a | yes |
 | peer\_external\_gateway | Configuration of an external VPN gateway to which this VPN is connected. | <pre>object({<br>    redundancy_type = string<br>    interfaces = list(object({<br>      id         = number<br>      ip_address = string<br>    }))<br>  })</pre> | `null` | no |

modules/vpn_ha/main.tf

@@ -165,6 +165,7 @@ resource "google_compute_vpn_tunnel" "tunnels" {
   ike_version                     = each.value.ike_version
   shared_secret                   = each.value.shared_secret == "" ? local.secret : each.value.shared_secret
   vpn_gateway                     = local.vpn_gateway_self_link
+  labels                          = var.labels
 }
 
 resource "random_id" "secret" {

modules/vpn_ha/variables.tf

@@ -112,3 +112,9 @@ variable "create_vpn_gateway" {
   default     = true
   type        = bool
 }
+
+variable "labels" {
+  description = "Labels for vpn components"
+  type        = map(string)
+  default     = {}
+}