Ensure that the netaddr import is in the 3rd party section

There were cases when the netaddr import was not in the correct place.

Change-Id: I7715fcfa8cade6a78a2a58dffdc9cdca13b7d59c
Closes-Bug: #1236744

nova/cmd/manage.py

@@ -55,10 +55,10 @@
 
 from __future__ import print_function
 
-import netaddr
 import os
 import sys
 
+import netaddr
 from oslo.config import cfg
 
 from nova.api.ec2 import ec2utils

nova/ipv6/account_identifier.py

@@ -20,6 +20,7 @@
 """IPv6 address generation with account identifier embedded."""
 
 import hashlib
+
 import netaddr
 
 from nova.openstack.common.gettextutils import _

nova/network/linux_net.py

@@ -21,10 +21,10 @@
 
 import calendar
 import inspect
-import netaddr
 import os
 import re
 
+import netaddr
 from oslo.config import cfg
 
 from nova import db

nova/objects/utils.py

@@ -16,6 +16,7 @@
 
 import datetime
 import iso8601
+
 import netaddr
 
 from nova.network import model as network_model

nova/tests/api/openstack/compute/contrib/test_networks.py

@@ -16,9 +16,9 @@
 
 import copy
 import math
-import netaddr
 import uuid
 
+import netaddr
 from oslo.config import cfg
 import webob
 

nova/tests/objects/test_objects.py

@@ -15,6 +15,7 @@
 import contextlib
 import datetime
 import iso8601
+
 import netaddr
 
 from nova.conductor import rpcapi as conductor_rpcapi

nova/tests/virt/test_virt_drivers.py

@@ -16,10 +16,11 @@
 
 import base64
 import fixtures
-import netaddr
 import sys
 import traceback
 
+import netaddr
+
 from nova.compute import manager
 from nova import exception
 from nova.openstack.common import importutils

nova/virt/netutils.py

@@ -25,7 +25,6 @@ import os
 
 import jinja2
 import netaddr
-
 from oslo.config import cfg
 
 from nova.network import model