Make all doc fragments, module utils, and plugin utils private (#11896)

* Make all doc fragments private.

* Make all plugin utils private.

* Make all module utils private.

* Reformat.

* Changelog fragment.

* Update configs and ignores.

* Adjust unit test names.

tests/unit/plugins/module_utils/test__onepassword.py

@@ -0,0 +1,42 @@
+# Copyright (c) 2022 Ansible Project
+# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from __future__ import annotations
+
+import os
+
+import pytest
+
+from ansible_collections.community.general.plugins.module_utils._onepassword import OnePasswordConfig
+
+
+@pytest.fixture
+def os_expanduser(mocker):
+    def _os_expanduser(path):
+        return path.replace("~", "/home/testuser")
+
+    mocker.patch("os.path.expanduser", side_effect=_os_expanduser)
+
+
+@pytest.fixture
+def exists(mocker):
+    def _exists(path):
+        if "op/" in path:
+            return True
+
+        return os.path.exists(path)
+
+
+def test_op_config(mocker, os_expanduser):
+    mocker.patch("os.path.exists", side_effect=[False, True])
+    op_config = OnePasswordConfig()
+
+    assert op_config.config_file_path == "/home/testuser/.config/op/config"
+
+
+def test_op_no_config(mocker, os_expanduser):
+    mocker.patch("os.path.exists", return_value=False)
+    op_config = OnePasswordConfig()
+
+    assert op_config.config_file_path is None