[LNT] add extra logging to LNT

[Tobias Grosser]

On 03/19/2014 09:22 PM, Chris Matthews wrote:
> This patch adds support for simple rotating logs in LNT.  When running in production mode, log to /var/log/lnt/lnt.log.
>
> Note, I would like to get errors being sent to email setup as well, but this is a first step.

I am not familiar with python loggers, but LNT logging is urgently 
needed. Thanks Chris for adding it!

Cheers,
Tobias