Replace oslo_utils.fnmatch with fnmatch

The oslo_utils.fnmatch module was added to solve an issue in py2.7 but
it is no longer required because py2.7 is no longer supported.
The module was deprecated since oslo.utils 4.9.1[1] and the stdlib's
fnmatch module should be used instead.

[1] 4c893c92f551c9dd2a7cfbe7ae8171ad8139df0b

Change-Id: Ibae52796df829f151c3088026a326deaf859bd44

ceilometer/agent.py

@@ -13,11 +13,11 @@
 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 # License for the specific language governing permissions and limitations
 # under the License.
+import fnmatch
 import os
 import pkg_resources
 
 from oslo_log import log
-from oslo_utils import fnmatch
 import yaml
 
 LOG = log.getLogger(__name__)

ceilometer/event/converter.py

@@ -13,9 +13,10 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+import fnmatch
+
 from oslo_config import cfg
 from oslo_log import log
-from oslo_utils import fnmatch
 from oslo_utils import timeutils
 import pkg_resources
 

ceilometer/publisher/gnocchi.py

@@ -13,6 +13,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 from collections import defaultdict
+import fnmatch
 import hashlib
 import itertools
 import json
@@ -24,7 +25,6 @@ import uuid
 from gnocchiclient import exceptions as gnocchi_exc
 from keystoneauth1 import exceptions as ka_exceptions
 from oslo_log import log
-from oslo_utils import fnmatch
 from oslo_utils import timeutils
 from stevedore import extension
 from urllib import parse as urlparse