Modified mysqlTransformer to filter away mock processes from buildup. Altered configuration example for camunda

[Cerfoglg]

• MysqlTransformer now searches for a provided substring ("mock" in our example) in the database rows, and filters away all processes containing that substring, to skip the buildup phase of the wfms when transforming the data.
• Altered configuration example to include the mock string, and complete the column transformations for camunda