Migrate to oslo.log

It's mostly a matter of changing imports to a new location.

Non-obvious changes needed:
* pass overwrite= argument to oslo_context since oslo.log reads context
  from its thread local store and not local.store from incubator
* don't store context at local.store now that there is no code that
  would consume it
* LOG.deprecated() -> versionutils.report_deprecated_feature()
* dropped LOG.audit check from hacking rule since now the method does
  not exist
* WritableLogger is now located in oslo_log.loggers

Dropped log module from the tree. Also dropped local module that is now
of no use (and obsolete, as per oslo team).

Added versionutils back to openstack-common.conf since now we use the
module directly from neutron code and not just as a dependency of some
other oslo-incubator module.

Note: tempest tests are expected to be broken now, so instead of fixing
all the oslo.log related issues for the subtree in this patch, I only
added TODOs with directions for later fix.

Closes-Bug: #1425013
Change-Id: I310e059a815377579de6bb2aa204de168e72571e
diff --git a/neutron/tests/tempest/common/accounts.py b/neutron/tests/tempest/common/accounts.py
index 2cb8cec..e10817b 100644
--- a/neutron/tests/tempest/common/accounts.py
+++ b/neutron/tests/tempest/common/accounts.py
@@ -15,13 +15,13 @@
 import hashlib
 import os
 
+from oslo_concurrency import lockutils
+from oslo_log import log as logging
 import yaml
 
 from neutron.tests.tempest.common import cred_provider
 from neutron.tests.tempest import config
 from neutron.tests.tempest import exceptions
-from oslo_concurrency import lockutils
-from neutron.openstack.common import log as logging
 
 CONF = config.CONF
 LOG = logging.getLogger(__name__)
diff --git a/neutron/tests/tempest/common/commands.py b/neutron/tests/tempest/common/commands.py
index f132e86..392c9d0 100644
--- a/neutron/tests/tempest/common/commands.py
+++ b/neutron/tests/tempest/common/commands.py
@@ -15,7 +15,7 @@
 import shlex
 import subprocess
 
-from neutron.openstack.common import log as logging
+from oslo_log import log as logging
 
 LOG = logging.getLogger(__name__)
 
diff --git a/neutron/tests/tempest/common/cred_provider.py b/neutron/tests/tempest/common/cred_provider.py
index a999cfc..fda955c 100644
--- a/neutron/tests/tempest/common/cred_provider.py
+++ b/neutron/tests/tempest/common/cred_provider.py
@@ -14,12 +14,12 @@
 
 import abc
 
+from oslo_log import log as logging
 import six
 
 from neutron.tests.tempest import auth
 from neutron.tests.tempest import config
 from neutron.tests.tempest import exceptions
-from neutron.openstack.common import log as logging
 
 CONF = config.CONF
 LOG = logging.getLogger(__name__)
diff --git a/neutron/tests/tempest/common/generator/base_generator.py b/neutron/tests/tempest/common/generator/base_generator.py
index 2771823..d3cae26 100644
--- a/neutron/tests/tempest/common/generator/base_generator.py
+++ b/neutron/tests/tempest/common/generator/base_generator.py
@@ -17,8 +17,7 @@
 import functools
 
 import jsonschema
-
-from neutron.openstack.common import log as logging
+from oslo_log import log as logging
 
 LOG = logging.getLogger(__name__)
 
diff --git a/neutron/tests/tempest/common/generator/negative_generator.py b/neutron/tests/tempest/common/generator/negative_generator.py
index 704d9fb..ba8884f 100644
--- a/neutron/tests/tempest/common/generator/negative_generator.py
+++ b/neutron/tests/tempest/common/generator/negative_generator.py
@@ -15,9 +15,10 @@
 
 import copy
 
+from oslo_log import log as logging
+
 import neutron.tests.tempest.common.generator.base_generator as base
 import neutron.tests.tempest.common.generator.valid_generator as valid
-from neutron.openstack.common import log as logging
 
 LOG = logging.getLogger(__name__)
 
diff --git a/neutron/tests/tempest/common/generator/valid_generator.py b/neutron/tests/tempest/common/generator/valid_generator.py
index 4d1906e..8ff9259 100644
--- a/neutron/tests/tempest/common/generator/valid_generator.py
+++ b/neutron/tests/tempest/common/generator/valid_generator.py
@@ -13,8 +13,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from oslo_log import log as logging
+
 import neutron.tests.tempest.common.generator.base_generator as base
-from neutron.openstack.common import log as logging
 
 
 LOG = logging.getLogger(__name__)
diff --git a/neutron/tests/tempest/common/glance_http.py b/neutron/tests/tempest/common/glance_http.py
index c802472..66fc2ab 100644
--- a/neutron/tests/tempest/common/glance_http.py
+++ b/neutron/tests/tempest/common/glance_http.py
@@ -28,11 +28,11 @@
 
 
 import OpenSSL
+from oslo_log import log as logging
 from six import moves
 from tempest_lib import exceptions as lib_exc
 
 from neutron.tests.tempest import exceptions as exc
-from neutron.openstack.common import log as logging
 
 LOG = logging.getLogger(__name__)
 USER_AGENT = 'tempest'
diff --git a/neutron/tests/tempest/common/isolated_creds.py b/neutron/tests/tempest/common/isolated_creds.py
index 41d7390..e4b0b08 100644
--- a/neutron/tests/tempest/common/isolated_creds.py
+++ b/neutron/tests/tempest/common/isolated_creds.py
@@ -13,6 +13,7 @@
 #    under the License.
 
 import netaddr
+from oslo_log import log as logging
 from tempest_lib import exceptions as lib_exc
 
 from neutron.tests.api.contrib import clients
@@ -20,7 +21,6 @@
 from neutron.tests.tempest.common.utils import data_utils
 from neutron.tests.tempest import config
 from neutron.tests.tempest import exceptions
-from neutron.openstack.common import log as logging
 
 CONF = config.CONF
 LOG = logging.getLogger(__name__)
diff --git a/neutron/tests/tempest/common/ssh.py b/neutron/tests/tempest/common/ssh.py
index de1ad88..00febc6 100644
--- a/neutron/tests/tempest/common/ssh.py
+++ b/neutron/tests/tempest/common/ssh.py
@@ -20,10 +20,10 @@
 import time
 import warnings
 
+from oslo_log import log as logging
 import six
 
 from neutron.tests.tempest import exceptions
-from neutron.openstack.common import log as logging
 
 
 with warnings.catch_warnings():
diff --git a/neutron/tests/tempest/common/utils/misc.py b/neutron/tests/tempest/common/utils/misc.py
index cc0004d..b97dd86 100644
--- a/neutron/tests/tempest/common/utils/misc.py
+++ b/neutron/tests/tempest/common/utils/misc.py
@@ -16,7 +16,7 @@
 import inspect
 import re
 
-from neutron.openstack.common import log as logging
+from oslo_log import log as logging
 
 LOG = logging.getLogger(__name__)
 
diff --git a/neutron/tests/tempest/common/waiters.py b/neutron/tests/tempest/common/waiters.py
index b54ef73..049d5ca 100644
--- a/neutron/tests/tempest/common/waiters.py
+++ b/neutron/tests/tempest/common/waiters.py
@@ -13,10 +13,11 @@
 
 import time
 
+from oslo_log import log as logging
+
 from neutron.tests.tempest.common.utils import misc as misc_utils
 from neutron.tests.tempest import config
 from neutron.tests.tempest import exceptions
-from neutron.openstack.common import log as logging
 
 CONF = config.CONF
 LOG = logging.getLogger(__name__)