make event_stream optional+computed

Author: googlyrahman

mmv1/third_party/terraform/services/storagetransfer/resource_storage_transfer_job.go.tmpl

@@ -118,9 +118,9 @@ func ResourceStorageTransferJob() *schema.Resource {
 			"event_stream": {
 				Type:          schema.TypeList,
 				Optional:      true,
+				Computed:      true,
 				MaxItems:      1,
-				ConflictsWith: []string{"schedule"},
-				DiffSuppressFunc: diffSuppressEventStream,
+				ConflictsWith: []string{"schedule", "replication_spec"},
 				Elem: &schema.Resource{
 					Schema: map[string]*schema.Schema{
 						"name": {
@@ -1426,12 +1426,6 @@ func flattenTransferJobNotificationConfig(notificationConfig *storagetransfer.No
 	return []map[string]interface{}{data}
 }
 
-func diffSuppressEventStream(k, old, new string, d *schema.ResourceData) bool {
-	// Check if it's a replication job.
-	_, is_replication := d.GetOk("replication_spec")
-	return is_replication
-}
-
 func expandReplicationSpecs(replicationSpecs []interface{}) *storagetransfer.ReplicationSpec {
 	if len(replicationSpecs) == 0 || replicationSpecs[0] == nil {
 		return nil