filter child resource if resource type not present in filter (#607)

Author: laurenleach

pkg/sync/syncer.go

@@ -848,14 +848,23 @@ func (s *syncer) getSubResources(ctx context.Context, parent *v2.Resource) error
 	ctx, span := tracer.Start(ctx, "syncer.getSubResources")
 	defer span.End()
 
+	syncResourceTypeMap := make(map[string]bool)
+	for _, rt := range s.syncResourceTypes {
+		syncResourceTypeMap[rt] = true
+	}
+
 	for _, a := range parent.GetAnnotations() {
 		if a.MessageIs((*v2.ChildResourceType)(nil)) {
 			crt := &v2.ChildResourceType{}
 			err := a.UnmarshalTo(crt)
 			if err != nil {
 				return err
 			}
-
+			if len(s.syncResourceTypes) > 0 {
+				if shouldSync := syncResourceTypeMap[crt.GetResourceTypeId()]; !shouldSync {
+					continue
+				}
+			}
 			childAction := Action{
 				Op:                   SyncResourcesOp,
 				ResourceTypeID:       crt.GetResourceTypeId(),