##### SUMMARY

Add field to ovirt_host_network to configure "Custom Properties" (from oVirt) 

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME

ovirt_host_network

##### ADDITIONAL INFORMATION
<!--- Describe how the feature would be used, why it is needed and what it would solve -->
This feature will be used to configure specific options during host's network setup (e.g. custom proprieties for FCoE)

```yaml
- ovirt_host_network:
    name: myhost
    interface: eth0-fcoe
    networks:
      - name: myvlan1
      - name: myvlan2
    custom_proprieties:
      - type: fcoe
        options: "enable=yes,dcb=no,auto_vlan=yes"
```
MIIMON_100 = dict(miimon='100')
    DEFAULT_MODE_OPTS = {
        '1': MIIMON_100,
        '2': MIIMON_100,
        '3': MIIMON_100,
        '4': dict(xmit_hash_policy='2', **MIIMON_100)
    }
    options = []
    if mode is None:
        return options
    def get_type_name(mode_number):
        """
        We need to maintain this type strings, for the __compare_options method,
        for easier comparision.
        """
        modes = [
            'Active-Backup',
            'Load balance (balance-xor)',
            None,