201-aks-rbac-dashboard-admin patch (#148)

* fix 201-aks-rbac-dashboard-admin

* remove azuread provider block

* rename aks resource to main

---------

Co-authored-by: zjhe <hezijie@microsoft.com>

quickstart/201-aks-rbac-dashboard-admin/main.tf

@@ -1,18 +1,14 @@
-# The Azure Active Resource Manager Terraform provider
-provider "azurerm" {
-  version = "=1.36.1"
-}
-
-# The Azure Active Directory Terraform provider
-provider "azuread" {
-  version = "=0.6.0"
-}
-
 # Reference to the current subscription.  Used when creating role assignments
 data "azurerm_subscription" "current" {}
 
+resource "random_string" "rg" {
+  length  = 8
+  special = false
+  upper   = false
+}
+
 # The main resource group for this deployment
 resource "azurerm_resource_group" "default" {
-  name     = "${var.name}-${var.environment}-rg"
-  location = "${var.location}"
+  name     = "${var.name}-${var.environment}-${random_string.rg.result}-rg"
+  location = var.location
 }