<!--- Verify first that your feature was not already discussed on GitHub -->
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##### SUMMARY
<!--- Describe the new feature/improvement briefly below -->
Currently it's not possible to specify disks to be included in the snapshot, always all disks are used.

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
ovirt_snapshot

##### ADDITIONAL INFORMATION
<!--- Describe how the feature would be used, why it is needed and what it would solve -->

<!--- Paste example playbooks or commands between quotes below -->
Could look like:
```yaml
ovirt_snapshot:
  description: My snap
  vm_name: myvm
  disks:
    - id: 123
    - id: 456
```

or 

```yaml
ovirt_snapshot:
  description: My snap
  vm_name: myvm
  disks:
    - name: myvm_disk_db
    - name: myvm_disk_store
```

<!--- HINT: You can also paste gist.github.com links for larger files -->

proxy_url,
            transfer.signed_ticket
        )
        return True
    finally:
        transfer_service.finalize()
        while transfer.phase in [
            otypes.ImageTransferPhase.TRANSFERRING,
            otypes.ImageTransferPhase.FINALIZING_SUCCESS,
        ]:
            time.sleep(module.params['poll_interval'])
            transfer = transfer_service.get()
        if transfer.phase in [
            otypes.ImageTransferPhase.UNKNOWN,
            otypes.ImageTransferPhase.FINISHED_FAILURE,
            otypes.ImageTransferPhase.FINALIZING_FAILURE,
            otypes.ImageTransferPhase.CANCELLED,
        ]:
            raise Exception(
                "Error occurred while uploading image. The transfer is in %s" % transfer.phase
            )
        if module.params.get('logical_unit'):
            disks_service = connection.system_service().disks_service()
            wait(
                service=disks_service.service(module.params['id']),
                condition=lambda d: d.status == otypes.DiskStatus.OK,
                wait=module.params['wait'],
                timeout=module.params['timeout'],
            )
def upload_disk_image(connection, module):