[POC] Added default trans strategy parameter

I was getting parameter not existing exception

````
The service "cmf_core.persistence.phpcr.translatable_metadata_listener" has a dependency on a non-existent parameter "cmf_core.persistence.phpcr.translation_strategy". Did you mean this: "cmf_core.persistence.phpcr.manager_name"?
````

When executing tests for MenuBundle, this fixed it. But don't know what *should* be done.