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/cros_generate_sysroot.py b/scripts/cros_generate_sysroot.py
index 60af9c2..6097869 100644
--- a/scripts/cros_generate_sysroot.py
+++ b/scripts/cros_generate_sysroot.py
@@ -10,14 +10,15 @@
 import os
 
 from chromite.lib import build_target_lib
+from chromite.lib import commandline
 from chromite.lib import constants
 from chromite.lib import cros_build_lib
-from chromite.lib import commandline
 from chromite.lib import osutils
 from chromite.lib import sudo
 from chromite.lib import sysroot_lib
 from chromite.lib import toolchain
 
+
 DEFAULT_NAME = 'sysroot_%(package)s.tar.xz'
 PACKAGE_SEPARATOR = '/'
 SYSROOT = 'sysroot'