Fixes import order errors

Change-Id: I3df7bfb2e0812b006fa41bd76fb6156ebcd74362

quantum/common/exceptions.py

@@ -20,8 +20,8 @@ Quantum base exception handling.
 """
 
 from quantum.openstack.common.exception import Error
-from quantum.openstack.common.exception import OpenstackException
 from quantum.openstack.common.exception import InvalidContentType
+from quantum.openstack.common.exception import OpenstackException
 
 
 class QuantumException(OpenstackException):

quantum/db/portsecurity_db.py

@@ -16,8 +16,8 @@
 #
 # @author: Aaron Rosen, Nicira, Inc
 
-from sqlalchemy.orm import exc
 import sqlalchemy as sa
+from sqlalchemy.orm import exc
 
 from quantum.db import model_base
 from quantum.extensions import portsecurity as psec

quantum/plugins/nec/nec_plugin.py

@@ -21,9 +21,9 @@ from quantum import context
 from quantum.db import dhcp_rpc_base
 from quantum.db import l3_db
 from quantum.db import l3_rpc_base
-from quantum.extensions import portbindings
 #NOTE(amotoki): quota_db cannot be removed, it is for db model
 from quantum.db import quota_db
+from quantum.extensions import portbindings
 from quantum.openstack.common import log as logging
 from quantum.openstack.common import rpc
 from quantum.plugins.nec.common import config

quantum/tests/unit/nec/test_nec_plugin.py

@@ -14,8 +14,8 @@
 # limitations under the License.
 
 from quantum.extensions import portbindings
-from quantum.tests.unit import test_db_plugin as test_plugin
 from quantum.tests.unit import _test_extension_portbindings as test_bindings
+from quantum.tests.unit import test_db_plugin as test_plugin
 
 
 class NecPluginV2TestCase(test_plugin.QuantumDbPluginV2TestCase):

quantum/tests/unit/test_l3_plugin.py

@@ -42,8 +42,8 @@ from quantum.extensions import l3
 from quantum import manager
 from quantum.openstack.common import cfg
 from quantum.openstack.common import log as logging
-from quantum.openstack.common.notifier import test_notifier
 from quantum.openstack.common.notifier import api as notifier_api
+from quantum.openstack.common.notifier import test_notifier
 from quantum.openstack.common import uuidutils
 from quantum.tests.unit import test_api_v2
 from quantum.tests.unit import test_db_plugin

quantum/tests/unit/test_wsgi.py

@@ -20,8 +20,8 @@ import socket
 
 import unittest2 as unittest
 
-from quantum import wsgi
 from quantum.common import exceptions as exception
+from quantum import wsgi
 
 
 class TestWSGIServer(unittest.TestCase):