<!--- 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 -->

template = self.__get_template_with_version()
        cluster = self.__get_cluster()
        snapshot = self.__get_snapshot()
        disk_attachments = self.__get_storage_domain_and_all_template_disks(template)
        return otypes.Vm(
            id=self.param('id'),
            name=self.param('name'),
            cluster=otypes.Cluster(
                name=cluster
            ) if cluster else None,
            disk_attachments=disk_attachments,
            template=otypes.Template(
                id=template.id,
            ) if template else None,
            use_latest_template_version=self.param('use_latest_template_version'),
            stateless=self.param('stateless') or self.param('use_latest_template_version'),
            delete_protected=self.param('delete_protected'),
            custom_emulated_machine=self.param('custom_emulated_machine'),
            bios=(
                otypes.Bios(boot_menu=otypes.BootMenu(enabled=self.param('boot_menu')))
            ) if self.param('boot_menu') is not None else None,
            console=(
                otypes.Console(enabled=self.param('serial_console'))
            ) if self.param('serial_console') is not None else None,
            usb=(
                otypes.Usb(enabled=self.param('usb_support'))
            ) if self.param('usb_support') is not None else None,
            sso=(
                otypes.Sso(