title: SCP Jenkins Plugin does not copy selectively
body: <p>I want to copy only specific files in a directory to remote server using Jenkins SCP Plugin.</p>
  
  <p>I have folder structure /X/Y/...Under Y, I need only the files a b c among a b c d e f. Is this possible...?</p>
  
  <p>Of course, to copy all files all you need is X/Y/**. But what about copying selectively.
  I was reading somewhere that this is a kind of bug in the plugin.</p>
  
  <p>I have string parameter, $FILES=x,y,z highlighted in "BUILD WITH PARAMETERS"</p>
  
  <p>SCP Configuration:</p>
  
  <p>Source: some/path/$FILES (relative to $WORKSPACE)
  Destination: /var/lib/some/path</p>