[DataPipe] Traverse DataPipe graph excluding primitive and callable (#67783)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/67783
Add `getstate_hook` to exclude primitive objects and callable when serialization when `exclude_primitive` is enabled for `traverse`.
For graph traversing, we don't have to handle the lambda and other stuff.
This is used by `OnDiskCacheHolder` to trace the DataPipe Graph.
Test Plan: Imported from OSS
Reviewed By: VitalyFedyunin
Differential Revision: D32146697
Pulled By: ejguan
fbshipit-source-id: 03b2ce981bb21066e807f57c167b77b2d0e0ce61
