Set interface instead of concrete class in the container config

[kpicaza]

Is your feature request related to a problem? Please describe.
In the current version, that factory configures a concrete Doctrine\DBAL\Connection class, to respect the Dependency Inversión Principle it would be better to configure the Doctrine\DBAL\Driver\Connection.

Describe the solution you'd like
Set Doctrine\DBAL\Driver\Connection as a service name in the config provider instead of current Doctrine\DBAL\Connection.