releasetools: Specify max_timestamp for secondary payload.

This is a mandatory field in the generated payload.

Bug: 35724498
Test: Generate OTA with --include_secondary. Check the generation
      command for secondary payload.
Change-Id: Ib2e25cc020e294eae5a4be36d6dca297432804b8
Merged-In: Ib2e25cc020e294eae5a4be36d6dca297432804b8
(cherry picked from commit 604812148517acb90a530dce6416be027834e0ed)
diff --git a/tools/releasetools/ota_from_target_files.py b/tools/releasetools/ota_from_target_files.py
index 3b111aa..af07a8c 100755
--- a/tools/releasetools/ota_from_target_files.py
+++ b/tools/releasetools/ota_from_target_files.py
@@ -1336,7 +1336,8 @@
     # building an incremental OTA. See the comments for "--include_secondary".
     secondary_target_file = GetTargetFilesZipForSecondaryImages(target_file)
     secondary_payload = Payload(secondary=True)
-    secondary_payload.Generate(secondary_target_file)
+    secondary_payload.Generate(secondary_target_file,
+                               additional_args=additional_args)
     secondary_payload.Sign(payload_signer)
     secondary_payload.WriteToZip(output_zip)