Use oslo.log instead of incubated code

Also use namespaceless oslo.config

Change-Id: I9bb01bd1e6154b8bc2aa82848b45fdd411c24fb7

stackalytics/processor/runtime_storage.py

@@ -16,9 +16,9 @@
 import re
 
 import memcache
+from oslo_log import log as logging
 import six
 
-from stackalytics.openstack.common import log as logging
 from stackalytics.processor import utils