distinguish catalog/database/schema terms

MySQL uses the term "schema" as a synonym of the term "database," while java Connector historically takes the JDBC term "catalog" as synonymous to "database".

CatalogTerm option indicates how DatabaseMetadata filter for catalog and schema must applied (using either catalog or schema filter)

since catalog appear in MariaDB 12.0 (https://mariadb.com/kb/en/catalogs-overview/) CatalogTerm must permit having a new value, to permit filtering on catalog AND schema. default behavior won't change.

This is designed specifically for super user only, so is not a critical feature