The order of JDBC drivers is not keep from jdbc_config.json

TCOMP seems to take the config in jdbc_config, put it in a hash-map and set the first one of this map as default driver. It look like a bit random.
It would also be nice to not have all types in uppercase, but to respect the brand case, as follows:

• Azure SQL
• Derby
• MariaDB
• MySQL
• PostgreSQL
• Redshift
• Snowflake
• SQL Server