upstart-scripts: changes forced by linter

BUG=none
TEST=none

Change-Id: Ied2ea150cb43aa1fefeb93cc815f868158965401
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/moblab/+/5425170
Reviewed-by: Michal Matyjek <mmatyjek@google.com>
Tested-by: Tomasz Jakubowski <jakubowskit@google.com>
Commit-Queue: Tomasz Jakubowski <jakubowskit@google.com>