Updated Front Door Classic code sample (#244)

quickstart/101-front-door-classic/outputs.tf

@@ -0,0 +1,7 @@
+output "resource_group_name" {
+  value = azurerm_resource_group.rg.name
+}
+
+output "frontDoorEndpointHostName" {
+  value = azurerm_frontdoor.main.frontend_endpoint[0].host_name
+}