Stop using oslo_utils.fnmatch

This was a work around for old buggy Python 2.7 versions. Everybody will have
to upgrade!

Change-Id: Id105e2e8c1fab7af49c11b323db64886e57eade6

gnocchi/indexer/__init__.py

@@ -13,12 +13,12 @@
 # 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 hashlib
 import os
 
 import iso8601
 from oslo_config import cfg
-from oslo_utils import fnmatch
 from oslo_utils import netutils
 import six
 from stevedore import driver

releasenotes/notes/fnmatch-python-2.7-c524ce1e1b238b0a.yaml

@@ -0,0 +1,5 @@
+---
+other:
+  - |
+    A workaround for a Python 2.7 bug in `fnmatch` has been removed. Makes sure
+    you use at least Python 2.7.9 to avoid running into it.