[autotest] run_pylint now notices uncommitted files.

Pylint will now reject any file that's part of the list
of files to commit but differs from the version in the
working tree, since it only checks the file in the working tree.

TEST=None
BUG=chromium-os:38896

Change-Id: I799cdff0836f82e4662682e4d697d9ad1129e20f
Reviewed-on: https://gerrit.chromium.org/gerrit/43417
Reviewed-by: Aviv Keshet <akeshet@chromium.org>
Reviewed-by: Alex Miller <milleral@chromium.org>
Commit-Queue: Prashanth Balasubramanian <beeps@chromium.org>
Tested-by: Prashanth Balasubramanian <beeps@chromium.org>
1 file changed