<!--- Verify first that your feature was not already discussed on GitHub -->
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##### 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 -->

description:
            - "Properties sent to VDSM to configure various hooks."
            - "Custom properties is a list of dictionary which can have following values:"
        suboptions:
            name:
                description:
                    - "Name of the custom property. For example: I(hugepages), I(vhost), I(sap_agent), etc."
            regexp:
                description:
                    - "Regular expression to set for custom property."
            value:
                description:
                    - "Value to set for custom property."
        version_added: "2.5"
    watchdog:
        description:
            - "Assign watchdog device for the virtual machine."
            - "Watchdogs is a dictionary which can have following values:"
        suboptions:
            model:
                description:
                    - "Model of the watchdog device. For example: I(i6300esb), I(diag288) or I(null)."
            action:
                description:
                    - "Watchdog action to be performed when watchdog is triggered. For example: I(none), I(reset), I(poweroff), I(pause) or I(dump)."
        version_added: "2.5"
    graphical_console:
        description:
            - "Assign graphical console to the virtual machine."
        suboptions: