`object_storage_remote_initiator` with different cluster name

[ianton-ru]

Now cluster request with object_sorage_cluster and object_storage_remote_initiator use the same cluster for remote query node and for cluster request.

SELECT * FROM s3(...) => SELECT * FROM remote(<random host from 'cluster'>, s3Cluster('cluster', ...))

Need to add ability to use one cluster for choose remote initiator node, and different cluster (may be no existed on original query initiator) for cluster request