Telegraf: Add "devfs" to ignore_fs
All three of the above disks use`devfs` as the filesystem.
The current issue with the telegraf package is that when you save from the Services -> Telegraf page, it overwrites whatever you put into `/usr/local/etc/telegraf.conf` with the following:
ignore_fs = ["tmpfs", "devtmpfs"]
The package needs to be updated to also include `devfs` in that list like so:
ignore_fs = ["tmpfs", "devtmpfs", "devfs"]