fix(m365): fix detection of usgov location

Author: jacdavi

m365/terraform/modules/app/app_create.tf

@@ -1,5 +1,5 @@
 locals {
-  is_us_gov = contains(split(" ", var.location), "USGov")
+  is_us_gov = startswith(lower(var.location), "usgov")
 }
 
 data "azuread_application_published_app_ids" "well_known" {}

m365/terraform/modules/container/main.tf

@@ -1,7 +1,7 @@
 data "azurerm_client_config" "current" {}
 
 locals {
-  is_us_gov    = contains(split(" ", var.resource_group.location), "USGov")
+  is_us_gov = startswith(lower(var.resource_group.location), "usgov")
   aad_endpoint = local.is_us_gov ? "https://login.microsoftonline.us" : "https://login.microsoftonline.com"
 }