[composer] Lock symfony/console version to 2.2.* min

On a project using symfony 2.1, I tried to add some specs, and get the following error

```
$ bin/phpspec 
PHP Fatal error:  Call to undefined method PhpSpec\Console\Application::setDefinition()
```

After some investigation, this method only exist since symfony/console v2.2.0 (https://github.com/symfony/Console/commit/226b9e27833a83b0993dbcd5dba806f0ef98cb08)

That's why I suggest locking symfony/console to ~2.2