Only print warning when ansible.cfg is actually skipped
* Also add unittests for the find_ini_config_file function
* Add documentation on world writable current working directory
config files can no longer be loaded from a world writable current
working directory but the end user is allowed to specify that
explicitly. Give appropriate warnings and information on how.
Fixes#42388
(cherry picked from commit 30662bedad)
Co-authored-by: Toshio Kuratomi <a.badger@gmail.com>
