Removal of unnecessary `import_opt`s for cells config options

After centralizing cells options, importing nova.conf module is
enough for using cells options. import_opt(<opt_name>, <module>)
functions are not necessary.

Blueprint centralize-config-options

Change-Id: I9aabe8f2cc337c1237c2a73475cc1a3d3f4a1575

nova/api/openstack/common.py

@@ -29,6 +29,7 @@ from webob import exc
 from nova.compute import task_states
 from nova.compute import utils as compute_utils
 from nova.compute import vm_states
+import nova.conf
 from nova import exception
 from nova.i18n import _
 from nova.i18n import _LE
@@ -49,14 +50,12 @@ osapi_opts = [
                help='Base URL that will be presented to users in links '
                     'to glance resources'),
 ]
-CONF = cfg.CONF
+CONF = nova.conf.CONF
 CONF.register_opts(osapi_opts)
 
 LOG = logging.getLogger(__name__)
 QUOTAS = quota.QUOTAS
 
-CONF.import_opt('enable', 'nova.cells.opts', group='cells')
-
 
 _STATE_MAP = {
     vm_states.ACTIVE: {

nova/api/openstack/compute/cells.py

@@ -16,7 +16,6 @@
 
 """The cells extension."""
 
-from oslo_config import cfg
 import oslo_messaging as messaging
 from oslo_utils import strutils
 import six
@@ -28,14 +27,13 @@ from nova.api.openstack import extensions
 from nova.api.openstack import wsgi
 from nova.api import validation
 from nova.cells import rpcapi as cells_rpcapi
+import nova.conf
 from nova import exception
 from nova.i18n import _
 from nova import rpc
 
 
-CONF = cfg.CONF
-CONF.import_opt('name', 'nova.cells.opts', group='cells')
-CONF.import_opt('capabilities', 'nova.cells.opts', group='cells')
+CONF = nova.conf.CONF
 
 ALIAS = "os-cells"
 authorize = extensions.os_compute_authorizer(ALIAS)

nova/api/openstack/compute/legacy_v2/contrib/cells.py

@@ -16,7 +16,6 @@
 
 """The cells extension."""
 
-from oslo_config import cfg
 import oslo_messaging as messaging
 from oslo_utils import strutils
 from oslo_utils import timeutils
@@ -26,15 +25,14 @@ from webob import exc
 from nova.api.openstack import common
 from nova.api.openstack import extensions
 from nova.cells import rpcapi as cells_rpcapi
+import nova.conf
 from nova import context as nova_context
 from nova import exception
 from nova.i18n import _
 from nova import rpc
 
 
-CONF = cfg.CONF
-CONF.import_opt('name', 'nova.cells.opts', group='cells')
-CONF.import_opt('capabilities', 'nova.cells.opts', group='cells')
+CONF = nova.conf.CONF
 
 authorize = extensions.extension_authorizer('compute', 'cells')
 

nova/cmd/cells.py

@@ -17,19 +17,17 @@
 
 import sys
 
-from oslo_config import cfg
 from oslo_log import log as logging
 from oslo_reports import guru_meditation_report as gmr
 
+import nova.conf
 from nova import config
 from nova import objects
 from nova import service
 from nova import utils
 from nova import version
 
-CONF = cfg.CONF
-CONF.import_opt('topic', 'nova.cells.opts', group='cells')
-CONF.import_opt('manager', 'nova.cells.opts', group='cells')
+CONF = nova.conf.CONF
 
 
 def main():

nova/compute/api.py

@@ -89,7 +89,6 @@ wrap_exception = functools.partial(exception.wrap_exception,
 
 CONF = nova.conf.CONF
 CONF.import_opt('compute_topic', 'nova.compute.rpcapi')
-CONF.import_opt('enable', 'nova.cells.opts', group='cells')
 
 MAX_USERDATA_SIZE = 65535
 RO_SECURITY_GROUPS = ['default']

nova/compute/manager.py

@@ -268,7 +268,6 @@ CONF.import_opt('console_topic', 'nova.console.rpcapi')
 CONF.import_opt('host', 'nova.netconf')
 CONF.import_opt('enabled', 'nova.vnc', group='vnc')
 CONF.import_opt('enabled', 'nova.spice', group='spice')
-CONF.import_opt('enable', 'nova.cells.opts', group='cells')
 CONF.import_opt('image_cache_manager_interval', 'nova.virt.imagecache')
 CONF.import_opt('enabled', 'nova.rdp', group='rdp')
 CONF.import_opt('html5_proxy_base_url', 'nova.rdp', group='rdp')

nova/consoleauth/manager.py

@@ -26,6 +26,7 @@ from oslo_serialization import jsonutils
 from nova import cache_utils
 from nova.cells import rpcapi as cells_rpcapi
 from nova.compute import rpcapi as compute_rpcapi
+import nova.conf
 from nova.i18n import _LI, _LW
 from nova import manager
 from nova import objects
@@ -39,9 +40,8 @@ consoleauth_opts = [
                help='How many seconds before deleting tokens')
     ]
 
-CONF = cfg.CONF
+CONF = nova.conf.CONF
 CONF.register_opts(consoleauth_opts)
-CONF.import_opt('enable', 'nova.cells.opts', group='cells')
 
 
 class ConsoleAuthManager(manager.Manager):

nova/tests/functional/api_sample_tests/test_availability_zone.py

@@ -12,12 +12,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from oslo_config import cfg
-
+import nova.conf
 from nova.tests.functional.api_sample_tests import test_servers
 
-CONF = cfg.CONF
-CONF.import_opt('manager', 'nova.cells.opts', group='cells')
+CONF = nova.conf.CONF
 CONF.import_opt('osapi_compute_extension',
                 'nova.api.openstack.compute.legacy_v2.extensions')
 

nova/tests/functional/api_sample_tests/test_cells.py

@@ -13,15 +13,15 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from oslo_config import cfg
 from six.moves import range
 
 from nova.cells import state
+import nova.conf
 from nova.db.sqlalchemy import models
 from nova import exception
 from nova.tests.functional.api_sample_tests import api_sample_base
 
-CONF = cfg.CONF
+CONF = nova.conf.CONF
 CONF.import_opt('osapi_compute_extension',
                 'nova.api.openstack.compute.legacy_v2.extensions')
 

nova/tests/functional/integrated_helpers.py

@@ -21,9 +21,9 @@ import random
 import string
 import uuid
 
-from oslo_config import cfg
 from oslo_log import log as logging
 
+import nova.conf
 import nova.image.glance
 from nova import test
 from nova.tests import fixtures as nova_fixtures
@@ -31,9 +31,8 @@ from nova.tests.unit import cast_as_call
 import nova.tests.unit.image.fake
 
 
-CONF = cfg.CONF
+CONF = nova.conf.CONF
 LOG = logging.getLogger(__name__)
-CONF.import_opt('manager', 'nova.cells.opts', group='cells')
 
 
 def generate_random_alphanumeric(length):

nova/tests/unit/cells/fakes.py

@@ -16,19 +16,17 @@
 Fakes For Cells tests.
 """
 
-from oslo_config import cfg
-
 from nova.cells import driver
 from nova.cells import manager as cells_manager
 from nova.cells import state as cells_state
 from nova.cells import utils as cells_utils
+import nova.conf
 import nova.db
 from nova.db import base
 from nova import exception
 from nova import objects
 
-CONF = cfg.CONF
-CONF.import_opt('name', 'nova.cells.opts', group='cells')
+CONF = nova.conf.CONF
 
 
 # Fake Cell Hierarchy

nova/tests/unit/cells/test_cells_manager.py

@@ -19,12 +19,12 @@ import copy
 import datetime
 
 import mock
-from oslo_config import cfg
 from oslo_utils import timeutils
 from six.moves import range
 
 from nova.cells import messaging
 from nova.cells import utils as cells_utils
+import nova.conf
 from nova import context
 from nova import objects
 from nova import test
@@ -33,7 +33,7 @@ from nova.tests.unit import fake_instance
 from nova.tests.unit import fake_server_actions
 from nova.tests.unit.objects import test_flavor
 
-CONF = cfg.CONF
+CONF = nova.conf.CONF
 CONF.import_opt('compute_topic', 'nova.compute.rpcapi')
 
 

nova/tests/unit/cells/test_cells_messaging.py

@@ -21,7 +21,6 @@ import uuid
 
 import mock
 from mox3 import mox
-from oslo_config import cfg
 import oslo_messaging
 from oslo_serialization import jsonutils
 from oslo_utils import timeutils
@@ -32,6 +31,7 @@ from nova.cells import rpcapi as cells_rpcapi
 from nova.cells import utils as cells_utils
 from nova.compute import task_states
 from nova.compute import vm_states
+import nova.conf
 from nova import context
 from nova import db
 from nova import exception
@@ -44,8 +44,7 @@ from nova.tests.unit.cells import fakes
 from nova.tests.unit import fake_instance
 from nova.tests.unit import fake_server_actions
 
-CONF = cfg.CONF
-CONF.import_opt('name', 'nova.cells.opts', group='cells')
+CONF = nova.conf.CONF
 
 
 class CellsMessageClassesTestCase(test.NoDBTestCase):

nova/tests/unit/cells/test_cells_rpc_driver.py

@@ -19,19 +19,17 @@ Tests For Cells RPC Communication Driver
 
 import mock
 from mox3 import mox
-from oslo_config import cfg
 import oslo_messaging
 
 from nova.cells import messaging
 from nova.cells import rpc_driver
+import nova.conf
 from nova import context
 from nova import rpc
 from nova import test
 from nova.tests.unit.cells import fakes
 
-CONF = cfg.CONF
-CONF.import_opt('rpc_driver_queue_base', 'nova.cells.rpc_driver',
-                group='cells')
+CONF = nova.conf.CONF
 
 
 class CellsRPCDriverTestCase(test.NoDBTestCase):

nova/tests/unit/cells/test_cells_rpcapi.py

@@ -16,17 +16,16 @@
 Tests For Cells RPCAPI
 """
 
-from oslo_config import cfg
 import six
 
 from nova.cells import rpcapi as cells_rpcapi
+import nova.conf
 from nova import exception
 from nova import objects
 from nova import test
 from nova.tests.unit import fake_instance
 
-CONF = cfg.CONF
-CONF.import_opt('topic', 'nova.cells.opts', group='cells')
+CONF = nova.conf.CONF
 
 
 class CellsAPITestCase(test.NoDBTestCase):

nova/tests/unit/cells/test_cells_scheduler.py

@@ -18,13 +18,13 @@ Tests For CellsScheduler
 import copy
 import time
 
-from oslo_config import cfg
 from oslo_utils import uuidutils
 
 from nova import block_device
 from nova.cells import filters
 from nova.cells import weights
 from nova.compute import vm_states
+import nova.conf
 from nova import context
 from nova import db
 from nova import exception
@@ -35,12 +35,7 @@ from nova.tests.unit.cells import fakes
 from nova.tests.unit import fake_block_device
 from nova import utils
 
-CONF = cfg.CONF
-CONF.import_opt('scheduler_retries', 'nova.cells.scheduler', group='cells')
-CONF.import_opt('scheduler_filter_classes', 'nova.cells.scheduler',
-                group='cells')
-CONF.import_opt('scheduler_weight_classes', 'nova.cells.scheduler',
-                group='cells')
+CONF = nova.conf.CONF
 
 
 class FakeFilterClass1(filters.BaseCellFilter):

nova/tests/unit/compute/test_compute_cells.py

@@ -20,7 +20,6 @@ import inspect
 
 import mock
 from mox3 import mox
-from oslo_config import cfg
 from oslo_utils import timeutils
 
 from nova import block_device
@@ -30,6 +29,7 @@ from nova.compute import cells_api as compute_cells_api
 from nova.compute import flavors
 from nova.compute import utils as compute_utils
 from nova.compute import vm_states
+import nova.conf
 from nova import context
 from nova import db
 from nova import exception
@@ -43,7 +43,7 @@ from nova.tests import uuidsentinel as uuids
 
 
 ORIG_COMPUTE_API = None
-cfg.CONF.import_opt('enable', 'nova.cells.opts', group='cells')
+CONF = nova.conf.CONF
 
 
 def stub_call_to_cells(context, instance, method, *args, **kwargs):