On coral devices futility leaves the EC in RO Add a reboot into the futility.py script in case we lose the ethernet and don't get it back by the time futility finishes. BUG=b:331205004 TEST=On leased duts Change-Id: Ie075e5e209a5288aa1bc959c3f9ddd3113afa57c Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/5545058 Commit-Queue: Kshitij Shah <tij@google.com> Auto-Submit: Jeremy Bettis <jbettis@chromium.org> Commit-Queue: Jeremy Bettis <jbettis@chromium.org> Reviewed-by: Kshitij Shah <tij@google.com> Tested-by: Jeremy Bettis <jbettis@chromium.org>