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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def replication_connection_string_and_slot_using_pgpass(target_node_info):
 """Like `connection_string_and_slot_using_pgpass` but returns a connection string for a replication connection."""

    connection_info, slot = connection_info_and_slot(target_node_info)
    connection_info["dbname"] = "replication"
    connection_info["replication"] = "true"
    connection_string = create_pgpass_file(connection_info)
    return connection_string, slot