Renew-DHCP script fails to get the interface name 

Neither 
```
$IfaceName = $iface.NetConnectionID
or
$Name = $iface.GetRelated("Win32_PnPEntity") | Select-Object -ExpandProperty Name
```
return the name of the interface properly.  These should work according to https://devblogs.microsoft.com/scripting/use-powershell-to-identify-your-real-network-adapter/  and other sites
