logging: use cros_logging instead of logging

Replace all instances of import logging in chromite with cros_logging.

BUG=brillo:615
TEST=unittests + trybot
CQ-DEPEND=CL:260455

Change-Id: I3cf7ad9301290e736de2eebea00e9085656a2d5b
Reviewed-on: https://chromium-review.googlesource.com/261311
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Commit-Queue: Ralph Nathan <ralphnathan@chromium.org>
Tested-by: Ralph Nathan <ralphnathan@chromium.org>
diff --git a/scripts/cidb_admin.py b/scripts/cidb_admin.py
index 67586d1..7bf6e57 100644
--- a/scripts/cidb_admin.py
+++ b/scripts/cidb_admin.py
@@ -7,11 +7,11 @@
 from __future__ import print_function
 
 import os
-import logging
 
 from chromite.lib import cidb
 from chromite.lib import commandline
 from chromite.lib import cros_build_lib
+from chromite.lib import cros_logging as logging
 
 
 MIGRATE = 'migrate'