Convert legacy Packer json template to hcl2 template (#247)

* convert legacy Packer json template to hcl2 template

quickstart/201-vmss-packer-jumpbox/packer_image_resource_group/main.tf

@@ -0,0 +1,6 @@
+resource "random_pet" "id" {}
+
+resource "azurerm_resource_group" "image_group" {
+  location = "eastus"
+  name     = "packer-image-${random_pet.id.id}"
+}

quickstart/201-vmss-packer-jumpbox/packer_image_resource_group/outputs.tf

@@ -0,0 +1,3 @@
+output "resource_group_name" {
+  value = azurerm_resource_group.image_group.name
+}

quickstart/201-vmss-packer-jumpbox/packer_image_resource_group/providers.tf

@@ -0,0 +1,26 @@
+terraform {
+  required_version = ">=1.2"
+
+  required_providers {
+    azurerm = {
+      source  = "hashicorp/azurerm"
+      version = "~> 3.0"
+    }
+    helm = {
+      source  = "hashicorp/helm"
+      version = "2.9.0"
+    }
+    random = {
+      source  = "hashicorp/random"
+      version = "~> 3.0"
+    }
+  }
+}
+
+provider "azurerm" {
+  features {
+    resource_group {
+      prevent_deletion_if_contains_resources = false
+    }
+  }
+}