Fix PEP8 errors in MLX plugin

PEP8 errors N340 and N341 were introduced into Neutron
checks and are failing pep8 tests for MLX plugin.

Change-Id: Icf5cf9b45ef6c793008dc6151fe049fc7dea7019

networking_brocade/mlx/ml2/fi_ni/driver_factory.py

@@ -17,8 +17,8 @@
 """
 Returns the driver based on the firmware version of the device
 """
-from neutron.i18n import _LE
-from neutron.i18n import _LI
+from networking_brocade._i18n import _LE
+from networking_brocade._i18n import _LI
 from oslo_log import log as logging
 from oslo_utils import importutils
 

networking_brocade/mlx/ml2/fi_ni/fi_ni_driver.py

@@ -17,6 +17,7 @@
 Common driver for both FI and NI devices
 """
 
+from networking_brocade._i18n import _
 from oslo_log import log as logging
 from oslo_utils import importutils
 

networking_brocade/mlx/ml2/fi_ni/mechanism_brocade_fi_ni.py

@@ -16,6 +16,7 @@
 
 """Implementation of Brocade ML2 Mechanism driver for ICX and MLX."""
 
+from networking_brocade._i18n import _
 from networking_brocade._i18n import _LE
 from networking_brocade._i18n import _LI
 from neutron.plugins.ml2.common import exceptions as ml2_exc

networking_brocade/mlx/ml2/ssh_connector.py

@@ -15,8 +15,9 @@
 
 """ Implementation of SSH Connector"""
 
+from networking_brocade._i18n import _
+from networking_brocade._i18n import _LE
 from networking_brocade.mlx.ml2 import device_connector as dev_conn
-from neutron.i18n import _LE
 from oslo_log import log as logging
 
 import paramiko

networking_brocade/mlx/ml2/telnet_connector.py

@@ -18,8 +18,9 @@
 import telnetlib
 import time
 
+from networking_brocade._i18n import _
+from networking_brocade._i18n import _LE
 from networking_brocade.mlx.ml2 import device_connector as dev_conn
-from neutron.i18n import _LE
 from oslo_log import log as logging
 
 LOG = logging.getLogger(__name__)

networking_brocade/mlx/services/l3_router/brocade/l3_router_plugin.py

@@ -17,6 +17,7 @@
 
 """Implementation of Brocade L3RouterPlugin for NI devices."""
 
+from networking_brocade._i18n import _
 from networking_brocade._i18n import _LE
 from networking_brocade._i18n import _LI
 from neutron.plugins.ml2.driver_context import NetworkContext

networking_brocade/mlx/tests/unit/services/l3_router/brocade/test_l3_router_plugin.py

@@ -15,11 +15,11 @@
 
 
 import mock
+from networking_brocade._i18n import _LE
 from networking_brocade.mlx.services.l3_router.brocade import (
     l3_router_plugin as brocadel3routerplugin)
 from neutron import context
 from neutron.db import l3_db
-from neutron.i18n import _LE
 from neutron.services.l3_router import l3_router_plugin as router
 from neutron.tests import base
 from oslo_utils import importutils