Make VM order-able again

uncloud_vm/migrations/0014_vmwithosproduct_primary_disk.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.0.6 on 2020-05-08 14:01
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_vm', '0013_remove_vmproduct_primary_disk'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='vmwithosproduct',
+            name='primary_disk',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, to='uncloud_vm.VMDiskProduct'),
+        ),
+    ]