gooftool: Fix the add_file feature in UploadReport

The UploadReport function didn't properly add files.

BUG=b:34315130
TEST=manually test on a local device

Change-Id: I07d1a49f986fbe114dc1d1109e8231d58b631cf9
Reviewed-on: https://chromium-review.googlesource.com/1752580
Tested-by: Chun-Tsen Kuo <chuntsen@chromium.org>
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
Reviewed-by: Meng-Huan Yu <menghuan@chromium.org>
diff --git a/py/gooftool/commands.py b/py/gooftool/commands.py
index cf1342c..b5c604b 100755
--- a/py/gooftool/commands.py
+++ b/py/gooftool/commands.py
@@ -650,7 +650,7 @@
   if device_sn is None:
     logging.warning('RO_VPD missing device serial number')
     device_sn = 'MISSING_SN_' + time_utils.TimedUUID()
-  target_path = CreateReportArchive(device_sn)
+  target_path = CreateReportArchive(device_sn, options.add_file)
 
   if options.upload_method is None or options.upload_method == 'none':
     logging.warning('REPORT UPLOAD SKIPPED (report left at %s)', target_path)