<!--- 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 -->

protocol = [protocol]
        current_protocols = [str(gc.protocol) for gc in graphical_consoles]
        if not current_protocols:
            if not self._module.check_mode:
                for p in protocol:
                    gcs_service.add(
                        otypes.GraphicsConsole(
                            protocol=otypes.GraphicsType(p),
                        )
                    )
            return True
        
        if sorted(protocol) != sorted(current_protocols):
            if not self._module.check_mode:
                for gc in graphical_consoles:
                    gcs_service.console_service(gc.id).remove()
                for p in protocol:
                    gcs_service.add(
                        otypes.GraphicsConsole(
                            protocol=otypes.GraphicsType(p),
                        )
                    )
            return True
    def __attach_disks(self, entity):
        if not self.param('disks'):
            return
        vm_service = self._service.service(entity.id)
        disks_service = self._connection.system_service().disks_service()
        disk_attachments_service = vm_service.disk_attachments_service()
        self._wait_for_vm_disks(vm_service)