lint: fix wrong-import-order warnings

Newer pylint is able to enforce PEP8 module ordering.  Respect it.

BUG=chromium:863669
TEST=`cros lint` no longer reports this

Change-Id: I4d4f7669d6dcced7e0d1ceeffd949a818b867055
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/1768870
Reviewed-by: Chris McDonald <cjmcdonald@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
diff --git a/scripts/gconv_strip.py b/scripts/gconv_strip.py
index 4c2e109..e07aa11 100644
--- a/scripts/gconv_strip.py
+++ b/scripts/gconv_strip.py
@@ -7,14 +7,15 @@
 
 from __future__ import print_function
 
-import ahocorasick
 import functools
 import glob
-import lddtree
 import operator
 import os
 import stat
 
+import ahocorasick
+import lddtree
+
 from chromite.lib import commandline
 from chromite.lib import cros_build_lib
 from chromite.lib import cros_logging as logging