defining a second database connection does not work

[fritzmg]

Reproduction

1. create an app/config/config.yml with

   doctrine:
   dbal:
       connections:
           second:
               driver:   pdo_mysql
               host:     '%second_database_host%'
               port:     '%second_database_port%'
               dbname:   '%second_database_name%'
               user:     '%second_database_user%'
               password: '%second_database_password%'
               charset:  UTF8

2. provide the database parameters in your app/config/parameters.yml

   parameters:
   …
   second_database_host: …
   second_database_port: …
   second_database_user: …
   second_database_password: …
   second_database_name: …

3. try to access the second database connection with

   \System::getContainer()->get('doctrine')->getConnection('second');

   The following error will occur:

   Doctrine ORM Connection named "second" does not exist.

   Same with

   \System::getContainer()->get('doctrine.dbal.second_connection');

   »

   You have requested a non-existent service "doctrine.dbal.second_connection". Did you mean this: "doctrine.dbal.default_connection"?

[fritzmg]

nvm, I had an additional config_dev.yml and thus the config.yml was simply not loaded. See https://github.com/contao/manager-bundle/issues/44