Use unittest.mock instead of third party mock

Closes: #1177

gnocchi/tests/indexer/sqlalchemy/test_migrations.py

@@ -15,12 +15,12 @@
 import abc
 
 import fixtures
-import mock
 import oslo_db.exception
 from oslo_db.sqlalchemy import test_migrations
 import six
 import sqlalchemy.schema
 import sqlalchemy_utils
+from unittest import mock
 
 from gnocchi import indexer
 from gnocchi.indexer import sqlalchemy

gnocchi/tests/test_aggregates.py

@@ -17,8 +17,8 @@
 import functools
 import uuid
 
-import mock
 import numpy
+from unittest import mock
 
 from gnocchi import carbonara
 from gnocchi import incoming

gnocchi/tests/test_amqp1d.py

@@ -14,8 +14,8 @@
 import json
 import uuid
 
-import mock
 import numpy
+from unittest import mock
 
 from gnocchi import amqp1d
 from gnocchi.tests import base as tests_base

gnocchi/tests/test_indexer.py

@@ -17,8 +17,8 @@
 import operator
 import uuid
 
-import mock
 import numpy
+from unittest import mock
 
 from gnocchi import archive_policy
 from gnocchi import indexer

gnocchi/tests/test_rest.py

@@ -26,10 +26,10 @@
 import fixtures
 import iso8601
 from keystonemiddleware import fixture as ksm_fixture
-import mock
 import six
 import testscenarios
 from testtools import testcase
+from unittest import mock
 import webtest
 
 import gnocchi

gnocchi/tests/test_statsd.py

@@ -17,8 +17,8 @@
 import datetime
 import uuid
 
-import mock
 import numpy
+from unittest import mock
 
 from gnocchi import indexer
 from gnocchi import statsd

gnocchi/tests/test_storage.py

@@ -16,9 +16,9 @@
 import datetime
 import uuid
 
-import mock
 import numpy
 import six.moves
+from unittest import mock
 
 from gnocchi import archive_policy
 from gnocchi import carbonara

gnocchi/tests/test_utils.py

@@ -17,7 +17,7 @@
 import uuid
 
 import iso8601
-import mock
+from unittest import mock
 
 from gnocchi import storage
 from gnocchi.tests import base as tests_base

setup.cfg

@@ -95,7 +95,6 @@ test =
     gabbi>=1.37.0
     coverage>=3.6
     fixtures
-    mock
     python-subunit>=0.0.18
     os-testr
     testrepository