Initial Oslo sync for Tempest.

This patch syncs cfg, iniparser, and setup from oslo.
Additionally, to avoid a name conflict tempest.openstack was
renamed tempest.clients.

Also, the duplicate copy of setup.py in tempest.common was removed
and all references to it were updated.

Change-Id: I6ed3a97e35ce73b820f7a436214480051ed6528f
diff --git a/stress/tests/create_kill.py b/stress/tests/create_kill.py
index 26600de..2565723 100644
--- a/stress/tests/create_kill.py
+++ b/stress/tests/create_kill.py
@@ -17,14 +17,14 @@
 from stress.test_servers import *
 from stress.basher import BasherAction
 from stress.driver import *
-from tempest import openstack
+from tempest import clients
 
 choice_spec = [
     BasherAction(TestCreateVM(), 50),
     BasherAction(TestKillActiveVM(), 50)
 ]
 
-nova = openstack.Manager()
+nova = clients.Manager()
 
 bash_openstack(nova,
                choice_spec,