Add `distributed_port` for `deepspeed.initialize` (#5260)
`deepspeed.initialize` does not involve the `distributed_port` argument,
and always uses `TORCH_DISTRIBUTED_DEFAULT_PORT` to initialize the dist
env
Co-authored-by: Olatunji Ruwase <olruwase@microsoft.com>
Co-authored-by: Logan Adams <114770087+loadams@users.noreply.github.com>
