delete source tar if transfer is successful only (#973)

* delete source tar if transfer is successful only

current script removes tar even if transfer failed.
using rsync option we have possibility to remove source in case transfer is successful only.
if failed we can transfer failed tars later.

* Update scalelite_post_publish.rb

---------

Co-authored-by: Ahmad Farhat <ahmad.af.farhat@gmail.com>
Co-authored-by: Ahmad Farhat <ahmad.farhat@blindsidenetworks.com>

bigbluebutton/scalelite_post_publish.rb

@@ -72,7 +72,7 @@
   end
 
   puts("Transferring recording archive to #{spool_dir}")
-  system('rsync', '--verbose', '--protect-args', *extra_rsync_opts, archive_file, spool_dir) \
+  system('rsync', '--verbose', '--remove-source-files', '--protect-args', *extra_rsync_opts, archive_file, spool_dir) \
     || raise('Failed to transfer recording archive')
 
   # Delete recording after transfer
@@ -85,6 +85,4 @@
   File.write("#{recording_dir}/status/published/#{meeting_id}-sender.done", "Published #{meeting_id}")
 
   puts('Recording transferring to Scalelite ends')
-ensure
-  FileUtils.rm_f(archive_file)
 end