Update Oslo imports to remove namespace package

Change-Id: I4ec9b2a310471e4e07867073e9577731ac34027d
Blueprint: drop-namespace-packages

oslo_db/api.py

@@ -27,7 +27,7 @@ import logging
 import threading
 import time
 
-from oslo.utils import importutils
+from oslo_utils import importutils
 import six
 
 from oslo_db._i18n import _LE

oslo_db/concurrency.py

@@ -17,7 +17,7 @@ import copy
 import logging
 import threading
 
-from oslo.config import cfg
+from oslo_config import cfg
 
 from oslo_db._i18n import _LE
 from oslo_db import api

oslo_db/options.py

@@ -12,7 +12,7 @@
 
 import copy
 
-from oslo.config import cfg
+from oslo_config import cfg
 
 
 database_opts = [

oslo_db/sqlalchemy/models.py

@@ -22,7 +22,7 @@ SQLAlchemy models.
 
 import six
 
-from oslo.utils import timeutils
+from oslo_utils import timeutils
 from sqlalchemy import Column, Integer
 from sqlalchemy import DateTime
 from sqlalchemy.orm import object_mapper

oslo_db/sqlalchemy/session.py

@@ -283,7 +283,7 @@ import logging
 import re
 import time
 
-from oslo.utils import timeutils
+from oslo_utils import timeutils
 import six
 import sqlalchemy.orm
 from sqlalchemy import pool

oslo_db/sqlalchemy/utils.py

@@ -20,7 +20,7 @@ import collections
 import logging
 import re
 
-from oslo.utils import timeutils
+from oslo_utils import timeutils
 import six
 import sqlalchemy
 from sqlalchemy import Boolean

oslo_db/tests/sqlalchemy/test_options.py

@@ -11,8 +11,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from oslo.config import cfg
-from oslo.config import fixture as config
+from oslo_config import cfg
+from oslo_config import fixture as config
 
 from oslo_db import options
 from oslo_db.tests import utils as test_utils

oslo_db/tests/sqlalchemy/test_sqlalchemy.py

@@ -21,7 +21,7 @@ import logging
 
 import fixtures
 import mock
-from oslo.config import cfg
+from oslo_config import cfg
 from oslotest import base as oslo_test
 import sqlalchemy
 from sqlalchemy import Column, MetaData, Table

oslo_db/tests/test_api.py

@@ -16,8 +16,8 @@
 """Unit tests for DB API."""
 
 import mock
-from oslo.config import cfg
-from oslo.utils import importutils
+from oslo_config import cfg
+from oslo_utils import importutils
 
 from oslo_db import api
 from oslo_db import exception

oslo_db/tests/utils.py

@@ -15,7 +15,7 @@
 
 import contextlib
 
-from oslo.config import cfg
+from oslo_config import cfg
 from oslotest import base as test_base
 from oslotest import moxstubout
 import six