Introduce disk->image relationship

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

uncloud/uncloud_vm/migrations/0006_auto_20200229_1545.py

@@ -0,0 +1,53 @@
+# Generated by Django 3.0.3 on 2020-02-29 15:45
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('uncloud_vm', '0005_auto_20200227_1230'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='VMDiskImageProduct',
+            fields=[
+                ('uuid', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('name', models.CharField(max_length=256)),
+                ('is_os_image', models.BooleanField(default=False)),
+                ('is_public', models.BooleanField(default=False)),
+                ('size_in_gb', models.FloatField()),
+                ('storage_class', models.CharField(choices=[('hdd', 'HDD'), ('ssd', 'SSD')], default='ssd', max_length=32)),
+                ('owner', models.ForeignKey(editable=False, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+        migrations.RemoveField(
+            model_name='vmdiskproduct',
+            name='storage_class',
+        ),
+        migrations.AddField(
+            model_name='vmdiskproduct',
+            name='owner',
+            field=models.ForeignKey(default=1, editable=False, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL),
+            preserve_default=False,
+        ),
+        migrations.AddField(
+            model_name='vmnetworkcard',
+            name='ip_address',
+            field=models.GenericIPAddressField(blank=True, null=True),
+        ),
+        migrations.DeleteModel(
+            name='OperatingSystemDisk',
+        ),
+        migrations.AddField(
+            model_name='vmdiskproduct',
+            name='image',
+            field=models.ForeignKey(default=0, on_delete=django.db.models.deletion.CASCADE, to='uncloud_vm.VMDiskImageProduct'),
+            preserve_default=False,
+        ),
+    ]