migrate to terraform >1.0 provider alias definition

providers.tf

-provider "google" {
-  alias = "stackdriver"
-}

versions.tf

@@ -5,8 +5,10 @@ terraform {
     google = {
       source  = "hashicorp/google"
       version = ">= 3.70, < 5.0"
+      configuration_aliases = [
+        google.stackdriver
+      ]
     }
-
     google-beta = {
       source  = "hashicorp/google-beta"
       version = ">= 3.70, < 5.0"
@@ -14,4 +16,4 @@ terraform {
   }
 
   required_version = ">= 1.0, < 2.0"
-}
\ No newline at end of file
+}