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

This is a reland of commit 1518dca2fa1dcea77764b7652817092efcd2b5a0

Original change's description:
> 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>

Bug: b:213235948, b:223427198
Change-Id: I311d7cb793deaf4b2afb99e761af41e312f3a6ee
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/3518366
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Allen Webb <allenwebb@google.com>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
Commit-Queue: Allen Webb <allenwebb@google.com>
1 file changed