HostName entry in VM.info should be a new line

We can get host name from VM.info dcmd (and also hs_err log) on fastdebug build as below:

```
--------------- S Y S T E M ---------------

HostName: Xelvis OS:
 Windows 10 , 64 bit Build 19041 (10.0.19041.804)
OS uptime: 1 days 1:33 hours
Hyper-V role detected
```

`OS` label is available within HostName entry. It should be in a new line.
It affects Windows only.