Better examples, PR template changes, general tidy up (#375)

* adding 3 examples

* removing old example

* updating PR template

* fix this typo

* update after renaming default example

* add missing launch_template_mixed stuff to aws_auth

* fix 2 examples with public subnets

* update changelog for new minor release

examples/launch_templates/main.tf

@@ -0,0 +1,60 @@
+terraform {
+  required_version = ">= 0.11.8"
+}
+
+provider "aws" {
+  version = ">= 2.6.0"
+  region  = "${var.region}"
+}
+
+provider "random" {
+  version = "= 1.3.1"
+}
+
+data "aws_availability_zones" "available" {}
+
+locals {
+  cluster_name = "test-eks-lt-${random_string.suffix.result}"
+}
+
+resource "random_string" "suffix" {
+  length  = 8
+  special = false
+}
+
+module "vpc" {
+  source         = "terraform-aws-modules/vpc/aws"
+  version        = "1.60.0"
+  name           = "test-vpc-lt"
+  cidr           = "10.0.0.0/16"
+  azs            = ["${data.aws_availability_zones.available.names}"]
+  public_subnets = ["10.0.4.0/24", "10.0.5.0/24", "10.0.6.0/24"]
+
+  tags = {
+    "kubernetes.io/cluster/${local.cluster_name}" = "shared"
+  }
+}
+
+module "eks" {
+  source                             = "../.."
+  cluster_name                       = "${local.cluster_name}"
+  subnets                            = ["${module.vpc.public_subnets}"]
+  vpc_id                             = "${module.vpc.vpc_id}"
+  worker_group_count                 = 0
+  worker_group_launch_template_count = 2
+
+  worker_groups_launch_template = [
+    {
+      name                 = "worker-group-1"
+      instance_type        = "t2.small"
+      asg_desired_capacity = 2
+      public_ip            = true
+    },
+    {
+      name                 = "worker-group-2"
+      instance_type        = "t2.medium"
+      asg_desired_capacity = 1
+      public_ip            = true
+    },
+  ]
+}