Fixed #23699 -- Prevented flush from loading initial data for apps with migrations.

tests/fixtures_migration/migrations/0001_initial.py

@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    operations = [
+        migrations.CreateModel(
+            "Book",
+            [
+                ("name", models.CharField(max_length=100)),
+            ],
+        ),
+    ]