pyrun: fix quoting

BUG=None
TEST=None

Change-Id: Ieed7e7df9bed83dc6c54d687ae3f3ae657e22693
Reviewed-on: https://chromium-review.googlesource.com/1168457
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Luis Lozano <llozano@chromium.org>
1 file changed