Pass the lost and found directory name to DriveFS in the config struct.

Also, prepare to pass the myfiles directory as a mount option, but don't
actually send it yet - cros-disks isn't ready for it (and won't be until
after DriveFS runs as chronos) so would log the unsupported mount
option.

Bug: 928157
Change-Id: I2d38df787fb12b0a50a063aa445dc6c7d2e23597
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1623617
Reviewed-by: Noel Gordon <noel@chromium.org>
Commit-Queue: Sam McNally <sammc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#662091}
8 files changed