UPGRADE FROM 2.1 to 2.2

Commands

doctrine:query:sql command has been deprecated. Use dbal:run-sql command instead.

Following the changes in DBAL 2.11, we deprecated following configuration keys:
- doctrine.dbal.slaves. Use doctrine.dbal.replicas
- doctrine.dbal.keep_slave. Use doctrine.dbal.keep_replica
Similarly, if you use XML configuration, please replace <slave> with <replica>.
The metadata_cache_driver configuration key has been deprecated. PHP Array cache is now automatically registered when %kernel.debug% is false.