Drop use of 'oslo' namespace package

The Oslo libraries have moved all of their code out of the 'oslo'
namespace package into per-library packages. The namespace package was
retained during kilo for backwards compatibility, but will be removed by
the liberty-2 milestone. This change removes the use of the namespace
package, replacing it with the new package names.

The patches in the libraries will be put on hold until application
patches have landed, or L2, whichever comes first. At that point, new
versions of the libraries without namespace packages will be released as
a major version update.

Please merge this patch, or an equivalent, before L2 to avoid problems
with those library releases.

Blueprint: remove-namespace-packages
https://blueprints.launchpad.net/oslo-incubator/+spec/remove-namespace-packages

Change-Id: Ib17a74ada3122ce45c52fdd7dcf8d27fafbb1d70

autogenerate_config_docs/autohelp.py

@@ -18,7 +18,7 @@
 #
 
 # Must import this before argparse
-from oslo.config import cfg
+from oslo_config import cfg
 
 import argparse
 import importlib
@@ -29,7 +29,7 @@ import sys
 
 import git
 from lxml import etree
-import oslo.i18n as i18n
+import oslo_i18n as i18n
 import stevedore
 
 from hooks import HOOKS  # noqa

autogenerate_config_docs/extract_swift_flags.py

@@ -19,7 +19,7 @@ import pickle
 import sys
 
 from lxml import etree
-from oslo.config import cfg
+from oslo_config import cfg
 
 from autohelp import OptionsCache  # noqa
 

autogenerate_config_docs/hooks.py

@@ -27,7 +27,7 @@ def keystone_config():
 def glance_store_config():
     try:
         import glance_store
-        from oslo.config import cfg
+        from oslo_config import cfg
 
         glance_store.backend.register_opts(cfg.CONF)
     except ImportError:
@@ -40,7 +40,7 @@ def neutron_misc():
     import networking_cisco.plugins.cisco.cfg_agent.device_status  # noqa
     import networking_l2gw.services.l2gateway.common.config as l2gw
     import networking_vsphere.common.config
-    from oslo.config import cfg
+    from oslo_config import cfg
     import vmware_nsx.neutron.plugins.vmware.common.config  # noqa
 
     bsnstacklib.plugins.bigswitch.config.register_config()

autogenerate_config_docs/test/generator.py

@@ -30,7 +30,7 @@ import socket
 import sys
 import textwrap
 
-from oslo.config import cfg
+from oslo_config import cfg
 
 # from openstack.common import gettextutils
 from openstack.common import importutils

os_doc_tools/doctest.py

@@ -43,7 +43,7 @@ import time
 import urllib2
 
 from lxml import etree
-from oslo.config import cfg
+from oslo_config import cfg
 
 import os_doc_tools
 from os_doc_tools.common import check_output   # noqa

os_doc_tools/openstack/common/log.py

@@ -36,7 +36,7 @@ import os
 import sys
 import traceback
 
-from oslo.config import cfg
+from oslo_config import cfg
 import six
 from six import moves