<!--- 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 -->
I would like to be able to set the keyboard layout for graphical console through ansible, as it's already possible via API and UI

https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/html/rest_api_guide/types#types-display
==> keyboard_layout

##### 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 -->
In countries like Germany, I would like to setup the keyboard layout native to german. This is possible by API and UI, but not using ansible.

<!--- Paste example playbooks or commands between quotes below -->
```yaml
ovirt_vm:
  graphical_console:
    protocol:
      - vnc
    keyboard_layout: de_DE          
```

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

if self._initialization is not None:
            return self._initialization
        sysprep = self.param('sysprep')
        cloud_init = self.param('cloud_init')
        cloud_init_nics = self.param('cloud_init_nics') or []
        if cloud_init is not None:
            cloud_init_nics.append(cloud_init)
        if cloud_init or cloud_init_nics:
            self._initialization = otypes.Initialization(
                nic_configurations=[
                    otypes.NicConfiguration(
                        boot_protocol=otypes.BootProtocol(
                            nic.pop('nic_boot_protocol').lower()
                        ) if nic.get('nic_boot_protocol') else None,
                        ipv6_boot_protocol=otypes.BootProtocol(
                            nic.pop('nic_boot_protocol_v6').lower()
                        ) if nic.get('nic_boot_protocol_v6') else None,
                        name=nic.pop('nic_name', None),
                        on_boot=nic.pop('nic_on_boot', None),
                        ip=otypes.Ip(
                            address=nic.pop('nic_ip_address', None),
                            netmask=nic.pop('nic_netmask', None),
                            gateway=nic.pop('nic_gateway', None),
                            version=otypes.IpVersion('v4')
                        ) if (