make config idempotent

quickstart/101-azure-functions/main.tf

@@ -30,7 +30,7 @@ resource "azurerm_app_service_plan" "example" {
 
   sku {
     tier = var.asp_sku_tier
-    size = "P0V3"
+    size = "P0v3"
   }
 }
 

quickstart/101-azure-functions/variables.tf

@@ -43,7 +43,7 @@ variable "asp_name" {
 variable "asp_sku_tier" {
   description = "The SKU tier of the App Service Plan. Possible values are Free, Shared, Basic, Standard, Premium, PremiumV2, and PremiumV3."
   type        = string
-  default     = "Standard"
+  default     = "Premium0V3"
 }
 
 variable "fa_name" {