Make import of oslo libraries namespaceless

See https://blueprints.launchpad.net/oslo-incubator/+spec/drop-namespace-packages

Closes-Bug: 1423174
Change-Id: I48680ce6e7ce91005c147ab4388203946171d433
diff --git a/common/config.py b/common/config.py
index 0ea6263..ec7df2e 100644
--- a/common/config.py
+++ b/common/config.py
@@ -12,7 +12,7 @@
 
 import os
 
-from oslo.config import cfg
+from oslo_config import cfg
 
 import heat_integrationtests
 
diff --git a/common/test.py b/common/test.py
index a75bff9..c8bce8b 100644
--- a/common/test.py
+++ b/common/test.py
@@ -19,7 +19,7 @@
 
 import fixtures
 from heatclient import exc as heat_exceptions
-from oslo.utils import timeutils
+from oslo_utils import timeutils
 import six
 import testscenarios
 import testtools