Configure filesystem to check

[fr-fhe]

Hi,

At this time, sensors check root ("/") filesystem only.
In multidisk configurations, i think it should be possible to select another mount point in config.yaml.

I know it can be done with patching sensors_python.py in library/
I also know that PRs to include multidisk management are on the way.

But, adding mountpoint in configuration file (like ethernet port name, ...) could simplify many use case where only one disk must be monitored and not the root one :)

Just my penny !