Replace appdirs by platformdirs

appdirs was deprecated[1] and now platformdirs is the recommended
replacement.

[1] 8734277956

Change-Id: I39a1041c07fc9ab0e41fcd75ab32bf1348394553

os_faults/__init__.py

@@ -13,10 +13,10 @@
 import copy
 import os
 
-import appdirs
 import jsonschema
 import logging
 import pbr.version
+import platformdirs
 import yaml
 
 from os_faults.ansible import executor
@@ -38,11 +38,12 @@ def get_release():
     return pbr.version.VersionInfo('os_faults').release_string()
 
 
-APPDIRS = appdirs.AppDirs(appname='openstack', appauthor='OpenStack')
+PLATFORMDIRS = platformdirs.PlatformDirs(appname='openstack',
+                                         appauthor='OpenStack')
 UNIX_SITE_CONFIG_HOME = '/etc/openstack'
 CONFIG_SEARCH_PATH = [
     os.getcwd(),
-    APPDIRS.user_config_dir,
+    PLATFORMDIRS.user_config_dir,
     UNIX_SITE_CONFIG_HOME,
 ]
 CONFIG_FILES = [

requirements.txt

@@ -4,7 +4,7 @@
 
 pbr>=2.0.0 # Apache-2.0
 
-appdirs>=1.3.0 # MIT License
+platformdirs>=3 # MIT License
 click>=6.7 # BSD
 iso8601>=0.1.11 # MIT
 jsonschema>=2.6.0 # MIT