Merge pull request !3144 from nhussain/dataset_check

Merge pull request !3143 from TinaMengtingZhang/dataset-op-ut-mnist

Merge pull request !3077 from ava/invert

Merge pull request !3137 from cathwong/ckw_dataset_ut_cleanup7

Merge pull request !3095 from Simson/push-to-opensource

Merge pull request !3050 from liuxiao93/Tan/TruncateDiv/TruncateMOd

Merge pull request !3049 from liyong126/dataset_save_op

Merge pull request !3111 from peixu_ren/custom_gpu

Merge pull request !3104 from fary86/fix_mstype_eq

python part of random ops

added random select sub policy

validators added

comments added, remaining issues addressed

add more python test cases

fix ci

fix CI

fix order of include files

addr review cmts

addr review cmts

reorg file

fix compile err

address review cmts

address review cmts

Merge pull request !3071 from zhangbuxue/change_ValueError_to_TypeError_for_enumerate_start

Merge pull request !3062 from riemann_penn/fix_value_node_simplify

Merge pull request !3048 from amongo/SupportPrimitiveList

Merge pull request !2987 from peixu_ren/custom_gpu2

Merge pull request !3030 from xiefangqi/md_support-pslite

Merge pull request !3067 from cathwong/ckw_dataset_ut_cleanup6

Merge pull request !3066 from ZiruiWu/fix_validator

Merge pull request !3039 from TinaMengtingZhang/dataset-op-ut-cifar

address review cmts

addr review cmts

update cifar10 dataset
fixing missing error handling code in validator

Merge pull request !2963 from BowenK/python_pass_clean

Merge pull request !3025 from lichen/add_embedding_look_up_op

Merge pull request !3040 from islam_amin/bounding_box_augment_bugs

Merge pull request !2970 from panbingao/master

Merge pull request !2891 from Jamie/CacheOp_dev