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_aws_stack.py b/functional/test_aws_stack.py
index 2e2cd9d..5aabe95 100644
--- a/functional/test_aws_stack.py
+++ b/functional/test_aws_stack.py
@@ -12,10 +12,10 @@
 
 import hashlib
 import json
-import logging
 import random
 import urlparse
 
+from oslo_log import log as logging
 from swiftclient import utils as swiftclient_utils
 import yaml