Added missing google-beta lines to beta test (GoogleCloudPlatform#15034)

Author: melinath

mmv1/templates/terraform/examples/shared_future_reservation.tf.tmpl

@@ -1,4 +1,5 @@
 resource "google_project" "owner_project" {
+  provider = google-beta
   project_id      = "tf-test%{random_suffix}"
   name            = "tf-test%{random_suffix}"
   org_id          = "{{index $.TestEnvVars "org_id"}}"
@@ -7,18 +8,21 @@ resource "google_project" "owner_project" {
 }
 
 resource "google_project_service" "compute" {
+  provider = google-beta
   project            = google_project.owner_project.project_id
   service            = "compute.googleapis.com"
 }
 
 resource "google_project" "guest_project" {
+  provider = google-beta
   project_id      = "tf-test-2%{random_suffix}"
   name            = "tf-test-2%{random_suffix}"
   org_id          = "{{index $.TestEnvVars "org_id"}}"
   deletion_policy = "DELETE"
 }
 
 resource "google_org_policy_policy" "shared_reservation_org_policy" {
+  provider = google-beta
   name   = "projects/${google_project.owner_project.project_id}/policies/compute.sharedReservationsOwnerProjects"
   parent = "projects/${google_project.owner_project.project_id}"
 
@@ -30,6 +34,7 @@ resource "google_org_policy_policy" "shared_reservation_org_policy" {
 }
 
 resource "google_compute_future_reservation" "{{$.PrimaryResourceId}}" {
+  provider = google-beta
   project = google_project.owner_project.project_id
   name    = "{{index $.Vars "future_reservation_name"}}"
   time_window {