Support Mysqli driver options for SSL connections

[corphi]

The Mysqli DBAL connection/driver class has options for setting up an SSL/TLS connection, namely ssl_ca, ssl_capath, ssl_cert, ssl_cipher and ssl_key. These are currently not supported by the bundle configuration. The bundle configuration already supports encrypted connections to PostreSQL servers. PostgreSQL uses different parameter names, so adding the Mysqli flavour will not conflict.

[stof]

Can you send a PR adding it ?

[ostrolucky]

Indeed. This won't be implemented by maintainers, as it's not that common to use this. Should be implemented by someone who needs it.