add: default port number for lawndale DNS variable

.terraform-docs.yml

@@ -0,0 +1,5 @@
+formatter: markdown document
+
+output:
+  mode: inject
+  file: README.md

README.md

@@ -1,3 +1,11 @@
+# Terraform module for Lawndale Kubernetes environment
+[![Build Status](https://drone.thomasklein.me/api/badges/thomasklein/terraform-lawndale-k8s/status.svg)](https://drone.thomasklein.me/thomasklein/terraform-lawndale-k8s)
+
+This module manages the core Kubernetes cluster components running on Lawndale including workers. 
+
+
+
+<!-- BEGIN_TF_DOCS -->
 ## Requirements
 
 The following requirements are needed by this module:
@@ -128,3 +136,4 @@ Default: `"udp"`
 ## Outputs
 
 No outputs.
+<!-- END_TF_DOCS -->

variables.tf

@@ -7,6 +7,7 @@ variable "lawndale_dns_host" {
 variable "lawndale_dns_port" {
   type        = number
   description = "Port where the lawndale internal DNS server listens on"
+  default     = 53
 }
 
 variable "lawndale_dns_transport" {