[deepspeed] offload + non-cpuadam optimizer exception
adapting to https://github.com/microsoft/DeepSpeed/pull/2971 - as our deepspeed tests will fail without that new flag when that deepspeed PR will get merged.

Will add the new config `zero_force_ds_cpu_optimizer` to the integration docs and require `deepspeed>=0.8.3`, but can't do it here w/o breaking DS' CI.  Will do it here post new release https://github.com/huggingface/transformers/pull/22044

@jeffra 
_The documentation is not available anymore as the PR was closed or merged._