Add examples for confidential VM, VMSS and OS Disk

quickstart/201-confidential-os-disk/provider.tf

@@ -0,0 +1,14 @@
+terraform {
+  required_version = ">=1.0"
+
+  required_providers {
+    azurerm = {
+      source  = "hashicorp/azurerm"
+      version = "~>3.8"
+    }
+  }
+}
+
+provider "azurerm" {
+  features {}
+}