SCP task should show the error code for every error

Context

Problem

It appears the scp task uses:

https://github.com/hierynomus/sshj/blob/master/src/main/java/net/schmizz/sshj/xfer/scp/SCPEngine.java

Lines 74-76 have a default response if the return code is greater than 1 that does not display the remoteMessage. The suggestion is to change it so that if greater than 1 AND remoteMessage is null or empty string, then do the default response; otherwise, it would be helpful with troubleshooting if the remoteMessage is displayed if rc is greater than 1.

We had a case where scp was closing connection and throwing the default message without saying why that took a lot of effort to figure out (stumbled on solution). If the remoteMessage had displayed, we would have saved a lot of our time and your time.