Add support in omnibus to auto-generate ci connection (behind a flag)

1. Add ability to copy ci connection from main connection for omnibus install method. The ci connection will connect to the same database as the main connection
2. It will be behind a flag (that is suitable for omnibus install method). The flag will default to false. Customers can flip this to true if they wish to opt-in earlier than %16.0.

The intention is that this flag will flip to true in %16.0