Add test check mysql installed and running
Add db role and mysql cookbook
Change db from mysql to mariadb and explain cookbook version in Berksfile
Add test mariadb

This test check mariadb is installed, running and exist socket and mariadb user.
Add test check nginx user exist
Merge branch 'feature/setup_mysql' into develop
Merge pull request #3 from imoyoukan/release/0.2.1

Release/0.2.1