Filesystem Input to get filesystem metrics

**Is your feature request related to a problem? Please describe.**
No, this is feature request.

**Describe the solution you'd like**
Would be very useful that the disk usage input could get more details on disks attached to the computational unit(vm or not).

Metrics to export:
The disk space available to an unprivileged user in bytes.

The disk name. For example: /dev/disk1

The disk type. For example: ext4

The mounting point. For example: /

The total number of file nodes in the file system.

The disk space available in bytes.

The number of free file nodes in the file system.

The total disk space in bytes.

The used disk space in bytes.

The percentage of used disk space.

Some fields are not that relevant for my needs, but could be for other purposes.

Thanks in advance,
HD