Use oslo.log for heat_integrationtests

Later the integration jobs can be tuned to have their own
logging settings.

This change also raises _log_console_output to info, so it is displayed
by default.

Change-Id: Ifcaa6faf76c655e0c8cfd7d76775b80de70062c4
diff --git a/functional/test_autoscaling.py b/functional/test_autoscaling.py
index 60fa66f..d640915 100644
--- a/functional/test_autoscaling.py
+++ b/functional/test_autoscaling.py
@@ -12,8 +12,8 @@
 
 import copy
 import json
-import logging
 
+from oslo_log import log as logging
 from testtools import matchers
 
 from heat_integrationtests.common import test