Patch to Model Parallelism after PTL 1.0.3 Upgrade
This pull request **introduces 1 alert** when merging 77f3867cb8ed29de19137c14b7606acbd6ed58fd into 53b31f7b902f96e3b964214373c328b3fa2d3606 - [view on LGTM.com](https://lgtm.com/projects/g/NVIDIA/NeMo/rev/pr-fdbaf1bef5bfb2c8b4b97e7eda74c8c0cb5d0a77)

**new alerts:**

* 1 for Unused import
Hooks that we were previously using are now gone.

We were able to initialize model parallel and configure ddp from `setup` hook.