Fix DeepSpeedPlugin with IterableDataset (#7362)

* deepspeed add train_micro_batch_size_per_gpu argument

* Update naming and doc

* Modify to use auto naming convention, add test

* Add iterable tests

* Fix tests, attempt by mocking

* Import correct package

* Fix comparison

* Set as special test

* Remove import

* Add Changelog

Co-authored-by: SeanNaren <[email protected]>

(cherry picked from commit 98b94b8)

Author: Borda

CHANGELOG.md

@@ -5,6 +5,26 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
 
+## [1.3.x] - 2021-MM-DD
+
+### Added
+
+
+### Changed
+
+
+### Deprecated
+
+
+### Removed
+
+
+### Fixed
+
+
+- Fixed DeepSpeed with IterableDatasets ([#7362](https://github.com/PyTorchLightning/pytorch-lightning/pull/7362))
+
+
 ## [1.3.0] - 2021-05-06
 
 ### Added