<!--- 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 -->

domainMappings = list()
    for domainMapping in module.params['domain_mappings']:
        domainMappings.append(
            otypes.RegistrationDomainMapping(
                from_=otypes.Domain(
                    name=domainMapping['source_name'],
                ) if domainMapping['source_name'] else None,
                to=otypes.Domain(
                    name=domainMapping['dest_name'],
                ) if domainMapping['dest_name'] else None,
            )
        )
    return domainMappings
def _get_lun_mappings(module):
    lunMappings = list()
    for lunMapping in module.params['lun_mappings']:
        lunMappings.append(
            otypes.RegistrationLunMapping(
                from_=otypes.Disk(
                    lun_storage=otypes.HostStorage(
                        type=otypes.StorageType(lunMapping['source_storage_type'])
                        if (lunMapping['source_storage_type'] in