Migrate from mock to unittest.mock

mock is deprecated , use unittest.mock

Author: traylenator

test-requirements.txt

@@ -1,3 +1,2 @@
 pytest
-mock
 decorator

tests/test_collectd_cvmfs.py

@@ -1,7 +1,7 @@
 import sys
 
 import pytest
-from mock import MagicMock, Mock, mock_open, patch
+from unittest.mock import MagicMock, Mock, mock_open, patch
 
 configure_data = [
     (["ams.cern.ch"], ["nioerr"], True, True, 30, 200),
@@ -190,4 +190,4 @@ def test_read_mounttime_failed(collectd_cvmfs, repos, attributes, memory, mountt
             with patch('collectd.Values') as val_mock:
                 probe_instance.read(probe_config)
                 if mounttime:
-                    val_mock.return_value.dispatch.assert_any_call(type='mountok', values=[0], interval=probe_config.interval)
+                    val_mock.return_value.dispatch.assert_any_call(type='mountok', values=[0], interval=probe_config.interval)

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py27,py34,py35
+envlist = py27,py34,py35,py313
 
 [testenv]
 changedir=tests