Clearup filecopy/spray/despray tranfer endpoint tracing and rationalize

Much of the filecopy references the endpoint it is transferring to or from,
however it is in fact the endpoint it is communicating to, to do the transfer.
In cloud, that is the spray-service (or "localhost" if legacy ftslave is used),
but the current tracing always traces an unhelpful localhost IP (127.0.0.1)

Change the tracing to reference the host it's using to perform the action instead.