Sort all variables, outputs, arguments and blocks in resource block.

Adjust code file's style.
Add `numeric = false` for `random_string.name` in `201-mysql-fs-db` module as the name is used as `azurerm_mysql_flexible_server.default`'s `administrator_login` and the login name doesn't support a name start with number.
Add minimum constraints for `random_password.password` in `201-mysql-fs-db` module as the password required a minimum complexity.

quickstart/101-resource-group/main.tf

@@ -3,6 +3,6 @@ resource "random_pet" "rg_name" {
 }
 
 resource "azurerm_resource_group" "rg" {
-  name     = random_pet.rg_name.id
   location = var.resource_group_location
-}
+  name     = random_pet.rg_name.id
+}