* add documentation for new mysql_info users_info filter
* Add integration tests for mysql_info users_info
* fix list parsing when cursor come from mysql_info
Mysql_info use a DictCursor and mysql_user a normal cursor.
* fix case when an account as same user but different host and password
* document why certain authentications plugins cause issues
* add version_added for users_info to the documentation
* Add 'users' description to differentiate it from 'users_info'
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Co-authored-by: Andrew Klychkov <aaklychkov@mail.ru>
