new_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  from django.db import models, migrations
  import django.core.validators
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('iaas', '0009_add_min_ram_and_disk_to_image'),
      ]
  
      operations = [
          migrations.AlterField(
              model_name='instance',
              name='data_volume_size',
              field=models.PositiveIntegerField(default=20480, help_text='Data disk size in MiB', validators=[django.core.validators.MinValueValidator(1024)]),
              preserve_default=True,
          ),
      ]
  
subject: Add missing data_volume_size migration