Update MySQL driver version to use the latest version

In the 13.x release pom we define the mysql connector version as used in the Docker container. Currently 5.1.46

<mysql.connector.version>5.1.46</mysql.connector.version>

To follow our best practice we should update to the latest version.

MySQL lists the 5.1 driver as outdated, 'MySQL Connector/J 8.0 is highly recommended for use with MySQL Server 8.0, 5.7, and 5.6. Please upgrade to MySQL Connector/J 8.0.' 

https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-versions.html

Also update the MySQL definitions used for testing/developer mode