elasticsearch/logstash — pull request #2283 by lowstz (2014-12-23 09:52:22+00:00)
Title: fix nologin path

Run the command:
``` sh
which nologin
```
then it return
``` sh
/usr/sbin/nologin
```

I test this on these linux distribution below:
* Debian 7
* Ubuntu 12.04 LTS
* Ubuntu 14.04 LTS