querystorage: prevents raising a 501 Error because of lack of bulk capacity when querystorage is used in a replicate storage

In officejs, when using the synchronize functionnality with a remote webdav, fetching documents always fail, raising an error 501 as "Capacity bulk is not implemented on query_storage". As bulk storage is an in-development functionnality, and an alternative exists inside jio itself, let's disable it explicitely on some storages.