<!--- 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 -->

domain_mappings=dict(default=[], type='list'),
        reassign_bad_macs=dict(default=None, type='bool'),
        boot_menu=dict(type='bool'),
        serial_console=dict(type='bool'),
        usb_support=dict(type='bool'),
        sso=dict(type='bool'),
        quota_id=dict(type='str'),
        high_availability=dict(type='bool'),
        high_availability_priority=dict(type='int'),
        lease=dict(type='str'),
        stateless=dict(type='bool'),
        delete_protected=dict(type='bool'),
        custom_emulated_machine=dict(type='str'),
        force=dict(type='bool', default=False),
        nics=dict(type='list', default=[]),
        cloud_init=dict(type='dict'),
        cloud_init_nics=dict(type='list', default=[]),
        cloud_init_persist=dict(type='bool', default=False, aliases=['sysprep_persist']),
        kernel_params_persist=dict(type='bool', default=False),
        sysprep=dict(type='dict'),
        host=dict(type='str'),
        clone=dict(type='bool', default=False),
        clone_permissions=dict(type='bool', default=False),
        kernel_path=dict(type='str'),
        initrd_path=dict(type='str'),
        kernel_params=dict(type='str'),
        instance_type=dict(type='str'),
        description=dict(type='str'),
        comment=dict(type='str'),
        timezone=dict(type='str'),