Bring v1.0 to the most recent commit (#202) (#203)

* Request changes from MLPerf Storage (#199)

* added au metric to the configuration file; set shuffling and shuffle buffer size to be 2 for cosmoflow

* removed dependencies on dlioprofiler

* fixed bugs

* Fixed potential insufficient samples due to num_files is not divisible by comm.size (#200)

* added au metric to the configuration file; set shuffling and shuffle buffer size to be 2 for cosmoflow

* removed dependencies on dlioprofiler

* fixed bugs

* recovered back dlio_profiler

* fixed potential not enough samples

* Update tf_reader.py

* Mlperf requests (#201)

* added au metric to the configuration file; set shuffling and shuffle buffer size to be 2 for cosmoflow

* removed dependencies on dlioprofiler

* fixed bugs

* fixed issue with dlio_profiler

* bring back dlio_profiler_py