Fix: suggestion Array uses 'driverOptions' as one of its key, but this o...

...ption is not recognized

If you copy past the suggestions from the doctrine change you'll get a ```Unrecognized options "driverOptions" under "doctrine.dbal.connections.default"``` error 

It seems that option is not recognized by doctrine and that "options" should be used instead
Ref: http://symfony.com/doc/master/reference/configuration/doctrine.html#doctrine-dbal-configuration

No jira issue added after 1:1 con Jérôme. Let me know if you need it anyway.