devserver: Use chromite's logging library

We're removing cherrypy_log_util.py and its better to just use the
chromite's version of logging.

BUG=b:186066529
TEST=./devserver.py

Cq-Depend: chromium:2856532
Change-Id: Ibec85bb3f789baf831666c04405f4291d522176a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2856530
Tested-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Keith Haddow <haddowk@chromium.org>
Reviewed-by: Ivan Brovkovich <ivanbrovkovich@chromium.org>
Commit-Queue: Amin Hassani <ahassani@chromium.org>
diff --git a/devserver.py b/devserver.py
index 9f29604..7fddaf3 100755
--- a/devserver.py
+++ b/devserver.py
@@ -54,18 +54,19 @@
 # you will _not_ understand why.
 import setup_chromite  # pylint: disable=unused-import
 from chromite.lib import cros_build_lib
+from chromite.lib import cros_logging as logging
 from chromite.lib.xbuddy import android_build
 from chromite.lib.xbuddy import artifact_info
 from chromite.lib.xbuddy import build_artifact
-from chromite.lib.xbuddy import cherrypy_log_util
 from chromite.lib.xbuddy import common_util
 from chromite.lib.xbuddy import devserver_constants
 from chromite.lib.xbuddy import downloader
 from chromite.lib.xbuddy import xbuddy
 
+
 # Module-local log function.
 def _Log(message, *args):
-  return cherrypy_log_util.LogWithTag('DEVSERVER', message, *args)
+  return logging.info(message, *args)
 
 CACHED_ENTRIES = 12