Update for Neutron's migration to oslo_utils

Neutron has migrated off of oslo-incubator to oslo_utils, breaking our
dependency on neutron.openstack.common. This adds a requirements.txt
with required things and updates imports.  Also, fixes potential
NameErrors on use of unimported translators.

Change-Id: I2e4f83973188aab6e6ff7dcbe99f6c22589360b5

akanda/neutron/db/models_v2.py

@@ -26,10 +26,8 @@ from sqlalchemy.orm import validates
 
 from neutron.db import model_base
 from neutron.db import models_v2
-try:
-    from oslo_utils import timeutils
-except ImportError:
-    from neutron.openstack.common import timeutils
+
+from oslo_utils import timeutils
 
 
 def validate_port_number(port):

akanda/neutron/plugins/decorators.py

@@ -25,6 +25,7 @@ from neutron.common.config import cfg
 from neutron.common import exceptions as q_exc
 from neutron.db import models_v2 as qmodels
 from neutron.db import l3_db
+from neutron.i18n import _
 from neutron import manager
 
 from neutron.plugins.common import constants

akanda/neutron/plugins/floatingip.py

@@ -16,13 +16,13 @@
 
 import logging
 
-from oslo.config import cfg
+from oslo_config import cfg
+from oslo_utils import uuidutils
 
 from neutron.api.v2 import attributes
 from neutron.common import exceptions as q_exc
 from neutron.db.l3_db import DEVICE_OWNER_FLOATINGIP, FloatingIP
-from neutron.openstack.common import uuidutils
-
+from neutron.i18n import _
 
 LOG = logging.getLogger(__name__)
 

akanda/neutron/plugins/nsx_neutron_plugin.py

@@ -25,8 +25,9 @@ from neutron.common import rpc as n_rpc
 from neutron.common import topics
 from neutron.db import agents_db
 from neutron.db import l3_db
-from neutron.openstack.common import log as logging
+from oslo_log import log as logging
 from oslo.db import exception as db_exc
+from neutron.i18n import _
 from neutron.plugins.vmware.api_client import exception as api_exc
 from neutron.plugins.vmware.common import nsx_utils
 from neutron.plugins.vmware.common import sync as nsx_sync

requirements.txt

@@ -0,0 +1,2 @@
+oslo.log>=1.2.0  # Apache-2.0
+oslo.utils>=1.6.0 # Apache-2.0