cgpt: fix unittest failures

The change to sanitize this field broke the unittests slightly.

Also tweak the shebang to pass updated linter checks.

BUG=chromium:644845
TEST=unittest passes

Change-Id: I382fe01f4b7b2dfbc80cc1e922dc1f1cc0d86892
Reviewed-on: https://chromium-review.googlesource.com/442844
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
1 file changed