Enable checking for imports in alphabetical order

And fix existing alphabetical ordering problems

Change-Id: I3ab887e118adc8022c84ff7230e7cc2d261804f6

nova/compute/api.py

@@ -23,8 +23,8 @@ networking and storage of vms, and compute hosts on which they run)."""
 
 import functools
 import re
-import time
 import string
+import time
 
 from nova import block_device
 from nova.compute import aggregate_states
@@ -32,8 +32,8 @@ from nova.compute import instance_types
 from nova.compute import power_state
 from nova.compute import task_states
 from nova.compute import vm_states
-from nova import crypto
 from nova.consoleauth import rpcapi as consoleauth_rpcapi
+from nova import crypto
 from nova.db import base
 from nova import exception
 from nova import flags

nova/openstack/common/cfg.py

@@ -226,8 +226,8 @@ log files:
 
 import collections
 import copy
-import glob
 import functools
+import glob
 import optparse
 import os
 import string

nova/tests/rpc/test_dispatcher.py

@@ -19,8 +19,8 @@ Unit Tests for rpc.dispatcher
 """
 
 from nova import context
-from nova.rpc import dispatcher
 from nova.rpc import common as rpc_common
+from nova.rpc import dispatcher
 from nova import test
 
 

nova/tests/test_volume_utils.py

@@ -17,15 +17,15 @@
 
 """Tests For miscellaneous util methods used with volume."""
 
+from nova import context
 from nova import db
 from nova import flags
-from nova import context
-from nova import test
-from nova import log as logging
 import nova.image.fake
-from nova.volume import utils as volume_utils
+from nova import log as logging
 from nova.notifier import test_notifier
 from nova.openstack.common import importutils
+from nova import test
+from nova.volume import utils as volume_utils
 
 
 LOG = logging.getLogger(__name__)

nova/volume/manager.py

@@ -48,8 +48,8 @@ from nova.openstack.common import excutils
 from nova.openstack.common import importutils
 from nova import rpc
 from nova import utils
-from nova.volume import volume_types
 from nova.volume import utils as volume_utils
+from nova.volume import volume_types
 
 
 LOG = logging.getLogger(__name__)

nova/volume/utils.py

@@ -18,8 +18,8 @@
 
 from nova import flags
 from nova import log as logging
-from nova import utils
 from nova.notifier import api as notifier_api
+from nova import utils
 
 
 FLAGS = flags.FLAGS

run_tests.sh

@@ -110,7 +110,7 @@ function run_pep8 {
   #
 
   # Until all these issues get fixed, ignore.
-  ignore='--ignore=N4,N306'
+  ignore='--ignore=N4'
   ${wrapper} python tools/hacking.py ${ignore} ${srcfiles}
 }