Fix sanity test for modules

Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>

tests/unit/mock/path.py

@@ -1,3 +1,7 @@
+from __future__ import absolute_import, division, print_function
+
+__metaclass__ = type
+
 from ansible_collections.ansible.posix.tests.unit.compat.mock import MagicMock
 from ansible.utils.path import unfrackpath
 

tests/unit/mock/yaml_helper.py

@@ -1,3 +1,7 @@
+from __future__ import absolute_import, division, print_function
+
+__metaclass__ = type
+
 import io
 import yaml
 

tests/unit/modules/conftest.py

@@ -1,6 +1,10 @@
 # Copyright (c) 2017 Ansible Project
 # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 
+from __future__ import absolute_import, division, print_function
+
+__metaclass__ = type
+
 import json
 
 import pytest

tests/unit/modules/system/test_mount.py

@@ -1,3 +1,7 @@
+from __future__ import absolute_import, division, print_function
+
+__metaclass__ = type
+
 import os
 import tempfile
 

tests/unit/modules/utils.py

@@ -1,3 +1,7 @@
+from __future__ import absolute_import, division, print_function
+
+__metaclass__ = type
+
 import json
 
 from ansible_collections.ansible.posix.tests.unit.compat import unittest

tests/unit/plugins/action/test_synchronize.py

@@ -1,3 +1,7 @@
+from __future__ import absolute_import, division, print_function
+
+__metaclass__ = type
+
 '''
 (Epdb) pprint(DeepDiff(self.final_task_vars, out_task_vars), indent=2)
 { 'dic_item_added': set([u"root['ansible_python_interpreter']"]),