Find out if timeout is safe for clients to send as a parameter

[rzwiefel]

https://github.com/connexta/ddf-jsonrpc/blob/master/ddf-rpc-api/src/main/java/com/connexta/ddf/catalog/direct/CatalogMethods.java#L394-L395

Timeout may or may not be safe to let clients send (could be security risk)