use `cros lint` on upload hooks
We want to start enforcing style in these files, so use `cros lint`.
Also clean up the code base so we pass the linter.
BUG=chromium:340036
TEST=`repo upload` works in this dir (and runs `cros lint`)
TEST=`cros lint *.py` doesn't complain
TEST=`./pre-upload_unittest.py` works
Change-Id: I7ae8d944525d08940ed6f6b2d0c66e9d373cadbe
Reviewed-on: https://chromium-review.googlesource.com/184620
Reviewed-by: David James <davidjames@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
4 files changed
