<!--- 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 -->

vm_service = self._service.vm_service(entity.id)
        self.__suspend_shutdown_common(vm_service)
        if entity.status in [otypes.VmStatus.PAUSED, otypes.VmStatus.DOWN]:
            vm_service.start()
            self._wait_for_UP(vm_service)
        return vm_service.get()
    def _post_start_action(self, entity):
        vm_service = self._service.service(entity.id)
        self._wait_for_UP(vm_service)
        self._attach_cd(vm_service.get())
    def _attach_cd(self, entity):
        cd_iso = self.param('cd_iso')
        if cd_iso is not None:
            vm_service = self._service.service(entity.id)
            current = vm_service.get().status == otypes.VmStatus.UP and self.param('state') == 'running'
            cdroms_service = vm_service.cdroms_service()
            cdrom_device = cdroms_service.list()[0]
            cdrom_service = cdroms_service.cdrom_service(cdrom_device.id)
            cdrom = cdrom_service.get(current=current)
            if getattr(cdrom.file, 'id', '') != cd_iso:
                if not self._module.check_mode:
                    cdrom_service.update(
                        cdrom=otypes.Cdrom(
                            file=otypes.File(id=cd_iso)
                        ),
                        current=current,
                    )
                self.changed = True
        return entity
    def _migrate_vm(self, entity):