<!--- Verify first that your feature was not already discussed on GitHub -->
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##### 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 -->

wait_condition=lambda vm: vm.status == otypes.VmStatus.SUSPENDED,
            )
        elif state == 'absent':
            ret = vms_module.remove()
        elif state == 'registered':
            storage_domains_service = connection.system_service().storage_domains_service()
            
            sd_id = get_id_by_name(storage_domains_service, module.params['storage_domain'])
            storage_domain_service = storage_domains_service.storage_domain_service(sd_id)
            vms_service = storage_domain_service.vms_service()
            
            vms = vms_service.list(unregistered=True)
            vm = next(
                (vm for vm in vms if (vm.id == module.params['id'] or vm.name == module.params['name'])),
                None
            )
            changed = False
            if vm is None:
                vm = vms_module.search_entity()
                if vm is None:
                    raise ValueError(
                        "VM '%s(%s)' wasn't found." % (module.params['name'], module.params['id'])
                    )
            else:
                
                changed = True
                vm_service = vms_service.vm_service(vm.id)
                vm_service.register(
                    allow_partial_import=module.params['allow_partial_import'],
                    cluster=otypes.Cluster(