Merge "Add hints to borg backup error logging"

playbooks/roles/borg-backup/templates/borg-backup.j2

@@ -46,6 +46,7 @@ do
     _status=( "${PIPESTATUS[@]}" )
     if [[ ${_status[0]} -ne 0 ]]; then
         info "Streaming script ${f} failed!"
+        info "Note that problems in the ssh connectivity might cause the streaming script to fail. You may need to check both halves of the streaming backup."
         stream_exit=${_status[0]}
     elif [[ ${_status[1]} -ne 0 ]]; then
         info "Borg failed (rc: ${_status[1]})!"