<!--- 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 -->
Add 'restart' state or restart option to the `ovirt_vm` module.

##### 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 -->

<!--- Paste example playbooks or commands between quotes below -->
```yaml

```

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

- "Virtual Machine quota ID to be used for disk. By default quota is chosen by oVirt/RHV engine."
        version_added: "2.5"
    operating_system:
        description:
            - Operating system of the Virtual Machine.
            - Default value is set by oVirt/RHV engine.
            - "Possible values: debian_7, freebsd, freebsdx64, other, other_linux,
               other_linux_ppc64, other_ppc64, rhel_3, rhel_4, rhel_4x64, rhel_5, rhel_5x64,
               rhel_6, rhel_6x64, rhel_6_ppc64, rhel_7x64, rhel_7_ppc64, sles_11, sles_11_ppc64,
               ubuntu_12_04, ubuntu_12_10, ubuntu_13_04, ubuntu_13_10, ubuntu_14_04, ubuntu_14_04_ppc64,
               windows_10, windows_10x64, windows_2003, windows_2003x64, windows_2008, windows_2008x64,
               windows_2008r2x64, windows_2008R2x64, windows_2012x64, windows_2012R2x64, windows_7,
               windows_7x64, windows_8, windows_8x64, windows_xp"
    boot_devices:
        description:
            - List of boot devices which should be used to boot. For example C([ cdrom, hd ]).
            - Default value is set by oVirt/RHV engine.
        choices: [ cdrom, hd, network ]
    boot_menu:
        description:
            - "I(True) enable menu to select boot device, I(False) to disable it. By default is chosen by oVirt/RHV engine."
        type: bool
        version_added: "2.5"
    usb_support:
        description:
            - "I(True) enable USB support, I(False) to disable it. By default is chosen by oVirt/RHV engine."
        type: bool
        version_added: "2.5"
    serial_console:
        description: