support FTP mode of juno firmware
Juno has a mode to read/write the on-board MMC via USB mass storage using the USB_ON/USB_OFF commands from the low-level firmware. This requires the LAVA server to have a physical connection directly to the Juno board.
The low-level firmware also has an FTP, which alllows you to upload/update files to the on-board storage over FTP, which would work better for a LAVA instance with only a network connection to the Juno.
[Created via e-mail received from: Kevin Hilman email@example.com]
Migrated from https://projects.linaro.org/browse/LAVA-785