Some corrections to the check_graphite module.

Signed-off-by: Giuseppe Lavagetto <lavagetto@gmail.com>
Skeleton of the new git check
A new plugin to check graphite from nagios.

As I was finding it extremely difficult to interact with the original
disquis plugin I decided to spend some time to refactor it.
It is now more modular and will be easier to use and to modify according
to our purposes

Signed-off-by: Giuseppe Lavagetto <lavagetto@gmail.com>
renamed the new script