Improved Deepspeed Imports

[Atharva-Phatak]

What does this PR do?

As mentioned in #12786 PL needed some changes to imports. So as per the dicussion this is my First PR for Deepspeed Imports and later on I will create seprate PRs for Fairscale and all Loggers, etc.

Fixes #12786

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[plutasnyy]

Cool, LGTM, thanks @carmocca