File-access via Windows UNC Path fails

Hi, 

we try to use LA with Windows UNC Path 
```
input:
  file:
    - \\servername\c$\someapp\logs\*.log
```

It turns out, that issue #74 in node-glob is the problem. 
https://github.com/isaacs/node-glob/issues/74#issuecomment-611196129

Best Regards
Stefan  

