[migration] make vm name optional, use storage class choices

Signed-off-by: Nico Schottelius <nico@nico-notebook.schottelius.org>

uncloud/uncloud_vm/migrations/0002_auto_20200305_1321.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.0.3 on 2020-03-05 13:21
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_vm', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='vmdiskimageproduct',
+            name='storage_class',
+            field=models.CharField(choices=[('HDD', 'HDD'), ('SSD', 'SSD')], default='SSD', max_length=32),
+        ),
+        migrations.AlterField(
+            model_name='vmproduct',
+            name='name',
+            field=models.CharField(blank=True, max_length=32, null=True),
+        ),
+    ]