Nucivic nucivic internal issue 58 test migrations

Nucivic/nucivic-internal#43

### Acceptance test

```
drush -y dis dkan_dataset_api
drush -y en open_data_schema_map open_data_schema_ckan open_data_schema_map_dkan
drush -y fr --force open_data_schema_map_dkan
drush cc all
```

Endpoints should behave as it did with dkan_dataset_api