Add a way to configure JdbcTables on a per-database basis

[cawallin]

Though tempto now has support for specifying the schema (thanks!), Teradata specifies schemas differently -- it calls schemas "databases" and has different syntax. However, the schema support is baked into JdbcTableManager and assumes that you can create schemas via CREATE SCHEMA IF NOT EXISTS. We need a way to specify database-specific SQL for creating schemas (or generally overriding how the table manager works).

[kokosing]

@cawallin How important is that to you?

[cawallin]

Sorry, didn't see this. I got around it by creating a temp table, so it's not blocking me.