[typing] Pyre fixes for batch_distributed_inference
Summary:
Pyre does not support dynamic imports, so we can leave the pyre-ignores for those. (https://fb.workplace.com/groups/pyreqa/permalink/3119812734775204/)
Parameterized pyre-ignore are also necessary as explained by [this Q&A](https://www.internalfb.com/intern/qa/109058/pyre-says-undefined-attribute-16-module-parameteri)
Test Plan:
- `pyre -l .`
- `pyre check`
- `buck test //caffe2/torch/fb/training_toolkit/applications/sparse_nn/batch_distributed_inference/tests:batch_distributed_inference_test`
Reviewed By: vipannalla
Differential Revision: D28549240
fbshipit-source-id: dadfedf93aae860fe6d0a112002bdfe743139b1e
