[DRAFT] Add timeout parameter
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# What does this PR do ?

Based on https://github.com/NVIDIA/Megatron-LM/pull/723, this PR aims to make user-set timeout applicable to all ProcessGroups instead of just default ProcessGroups

**Collection**: [Note which collection this PR will affect]

# Changelog 
During model parallel initialization, it will pass a timeout parameter (which is the existing attribute of `NLPDDPStrategy`) to new ProcessGroup creation (`new_group`)

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**PR Type**:
- [ ] New Feature
- [x] Bugfix
- [ ] Documentation

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# Additional Information
Need to wait https://github.com/NVIDIA/Megatron-LM/pull/723 to be merged first
