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: I695d2141c00a5ee36e042efbb9bac4e2803c1948

ironic/cmd/__init__.py

@@ -13,6 +13,6 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from oslo import i18n
+import oslo_i18n as i18n
 
 i18n.install('ironic')

ironic/common/i18n.py

@@ -13,7 +13,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from oslo import i18n  # noqa
+import oslo_i18n as i18n  # noqa
 
 _translators = i18n.TranslatorFactory(domain='ironic')
 

ironic/common/rpc.py

@@ -27,8 +27,8 @@ __all__ = [
     'TRANSPORT_ALIASES',
 ]
 
-from oslo import messaging
 from oslo_config import cfg
+import oslo_messaging as messaging
 from oslo_serialization import jsonutils
 
 from ironic.common import context as ironic_context

ironic/common/service.py

@@ -19,10 +19,10 @@
 import signal
 import socket
 
-from oslo import messaging
 from oslo_config import cfg
 from oslo_context import context
 from oslo_log import log
+import oslo_messaging as messaging
 from oslo_utils import importutils
 
 from ironic.common import config

ironic/conductor/manager.py

@@ -49,12 +49,12 @@ import threading
 
 import eventlet
 from eventlet import greenpool
-from oslo import messaging
 from oslo_concurrency import lockutils
 from oslo_config import cfg
 from oslo_context import context as ironic_context
 from oslo_db import exception as db_exception
 from oslo_log import log
+import oslo_messaging as messaging
 from oslo_utils import excutils
 from oslo_utils import uuidutils
 

ironic/conductor/rpcapi.py

@@ -20,7 +20,7 @@ Client side of the conductor RPC API.
 
 import random
 
-from oslo import messaging
+import oslo_messaging as messaging
 
 from ironic.common import exception
 from ironic.common import hash_ring

ironic/objects/base.py

@@ -17,9 +17,9 @@
 import collections
 import copy
 
-from oslo import messaging
 from oslo_context import context
 from oslo_log import log as logging
+import oslo_messaging as messaging
 import six
 
 from ironic.common import exception

ironic/tests/api/test_hooks.py

@@ -17,8 +17,8 @@
 import json
 
 import mock
-from oslo import messaging
 from oslo_config import cfg
+import oslo_messaging as messaging
 import six
 from webob import exc as webob_exc
 

ironic/tests/conductor/test_manager.py

@@ -22,10 +22,10 @@ import datetime
 
 import eventlet
 import mock
-from oslo import messaging
 from oslo_config import cfg
 from oslo_context import context
 from oslo_db import exception as db_exception
+import oslo_messaging as messaging
 from oslo_utils import strutils
 from oslo_utils import uuidutils