lint: scripts: sort imports

After configuring sort behavior in isort.cfg, run `./scripts/isort`
on all the scripts/ modules in the tree.

BUG=b:187788732
TEST=`cros lint` is clean

Change-Id: Ida93e1a699eb6ee14adddb9f98bfca4392786143
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/3615054
Auto-Submit: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Sloan Johnson <sloanjohnson@google.com>
Commit-Queue: Sloan Johnson <sloanjohnson@google.com>
diff --git a/scripts/virtualenv_wrapper_unittest.py b/scripts/virtualenv_wrapper_unittest.py
index 4eb6367..fb27386 100644
--- a/scripts/virtualenv_wrapper_unittest.py
+++ b/scripts/virtualenv_wrapper_unittest.py
@@ -10,6 +10,7 @@
 from chromite.lib import cros_test_lib
 from chromite.scripts import virtualenv_wrapper
 
+
 _MODULE_DIR = os.path.dirname(os.path.realpath(__file__))