hooks/install/check-upstart-scripts: Add cros lint to checks.

This enforces linter checks on upstart scripts as part of the
post-install hooks.

BUG=b:213235948
TEST=emerge-${BOARD} usb_bouncer # with and without commands added

Cq-Depend: chromium:3499551
Change-Id: Ib4c7fdeb54cbb933edc65008e2d5af484b021c27
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/3453564
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Allen Webb <allenwebb@google.com>
Commit-Queue: Allen Webb <allenwebb@google.com>
1 file changed