Fix firestore backup schedule permadiff (#2114)

Enables PRC for firestore backup schedule in order to fix a permadiff
with the resource.

Adds a regression test.

fixes #2066

provider/provider_yaml_test.go

@@ -34,6 +34,7 @@ import (
 	"github.com/pulumi/providertest/pulumitest/assertpreview"
 	"github.com/pulumi/providertest/pulumitest/opttest"
 	"github.com/pulumi/providertest/replay"
+	"github.com/pulumi/pulumi/sdk/v3/go/auto/optpreview"
 )
 
 func TestDNSRecordSetUpgrade(t *testing.T) {
@@ -950,3 +951,9 @@ func TestImport(t *testing.T) {
 		})
 	}
 }
+
+func TestFirestoreBackupScheduleNoPermadiff(t *testing.T) {
+	pt := pulumiTest(t, "test-programs/firestore-backup-schedule")
+	pt.Up()
+	pt.Preview(optpreview.ExpectNoChanges())
+}

provider/resources.go

@@ -462,7 +462,8 @@ func Provider() tfbridge.ProviderInfo {
 			shimv2.WithDiffStrategy(shimv2.PlanState),
 			shimv2.WithPlanResourceChange(func(s string) bool {
 				switch s {
-				case "google_datastream_connection_profile":
+				case "google_datastream_connection_profile",
+					"google_firestore_backup_schedule":
 					return true
 				default:
 					return false

provider/test-programs/firestore-backup-schedule/Pulumi.yaml

@@ -0,0 +1,15 @@
+name: firestore-backup-schedule
+runtime: yaml
+resources:
+  firestoredb:
+    type: gcp:firestore:Database
+    properties:
+      locationId: us-central1
+      type: FIRESTORE_NATIVE
+
+  firestoreBackupsSchedule:
+    type: gcp:firestore:BackupSchedule
+    properties:
+      database: ${firestoredb.name}
+      retention: 8467200s
+      dailyRecurrence: {}