Add nagios NRPE checking

I needed to check my raid arrays with nagios, so I add a recipe which uses nagios LWRP.

I don't know if it's the purpose to do that in this cookbook, but in a way, it's like the same goal as `megaraid_sas` .

(It's working, of course : )
![Screenshot from 2013-03-30 20:26:55](https://f.cloud.github.com/assets/329969/320843/d170fde6-996f-11e2-993e-73629431e65e.png)