<!--- Verify first that your feature was not already discussed on GitHub -->
<!--- Complete *all* sections as described, this form is processed automatically -->

##### SUMMARY
<!--- Describe the new feature/improvement briefly below -->
Add 'restart' state or restart option to the `ovirt_vm` module.

##### 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_vm

##### 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 -->
```yaml

```

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

if self.param('template') is None:
            return None
        if self.param('storage_domain') is None:
            return None
        disks = list()
        for att in self._connection.follow_link(template.disk_attachments):
            disks.append(
                otypes.DiskAttachment(
                    disk=otypes.Disk(
                        id=att.disk.id,
                        format=otypes.DiskFormat(self.param('disk_format')),
                        storage_domains=[
                            otypes.StorageDomain(
                                id=get_id_by_name(
                                    self._connection.system_service().storage_domains_service(),
                                    self.param('storage_domain')
                                )
                            )
                        ]
                    )
                )
            )
        return disks
    def __get_snapshot(self):