<!--- 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 -->

existed_numa_nodes = numa_nodes_service.list()
            existed_numa_nodes.sort(reverse=len(existed_numa_nodes) > 1 and existed_numa_nodes[1].index > existed_numa_nodes[0].index)
            for current_numa_node in existed_numa_nodes:
                numa_nodes_service.node_service(current_numa_node.id).remove()
                updated = True
        for numa_node in self.param('numa_nodes'):
            if numa_node is None or numa_node.get('index') is None or numa_node.get('cores') is None or numa_node.get('memory') is None:
                continue
            numa_nodes_service.add(
                otypes.VirtualNumaNode(
                    index=numa_node.get('index'),
                    memory=numa_node.get('memory'),
                    cpu=otypes.Cpu(
                        cores=[
                            otypes.Core(
                                index=core
                            ) for core in numa_node.get('cores')
                        ],
                    ),
                    numa_node_pins=[
                        otypes.NumaNodePin(
                            index=pin
                        ) for pin in numa_node.get('numa_node_pins')
                    ] if numa_node.get('numa_node_pins') is not None else None,
                )
            )
            updated = True
        return updated
    def __attach_watchdog(self, entity):