/usr/share/tripleo-image-elements/mysql-mariadb-compat/README.md is in python-tripleo-image-elements 0.7.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | Provides compatibility with the mysql element for distributions that have
switched to mariadb and don't provide the necessary aliases.
|