Codesign: Versioning code to support older branches

Turns out it is easier to have suboptimal versioning code on the server
side than to deal with branches where changes are to be merged into.

build_files/buildbot/codesign/archive_with_indicator.py

@@ -76,6 +76,15 @@ class ArchiveState:
         except json.decoder.JSONDecodeError:
             raise ArchiveStateError('Error parsing JSON')
 
+        # NOTE: Compatibility code with older codesign code from times when client
+        # did not use JSON for the archive indicator. After all branches has codesign
+        # merged this code should be removed.
+        if type(object_as_dict) == int:
+            result = cls()
+            result.file_size = int(object_as_dict)
+            result.error_message = ''
+            return result
+
         return cls(**object_as_dict)
 
     @classmethod