'mac_address': (optional) mac address to assign to this interface
#TODO: CHECK if an optional 'vlan' parameter is needed for VIMs when type if VF and net_id is not provided,
the VLAN tag to be used. In case net_id is provided, the internal network vlan is used for tagging VF
'mac_address': (optional) mac address to assign to this interface
#TODO: CHECK if an optional 'vlan' parameter is needed for VIMs when type if VF and net_id is not provided,
the VLAN tag to be used. In case net_id is provided, the internal network vlan is used for tagging VF