Tests only works with --insecure databases

[rwrz]

I understand the usually we test the DB in a different environment, but here we do that in a more production-like environment, using certifications in a secure environment. Would be nice to add a possibility to turn off the --insecure parameter and add the option to pass the "certs dir".

[rwrz]

This project is quite dead, so I've started a fork here: https://github.com/realLifeGlobal/sqlboiler-crdb