Merge pull request !3477 from gengdongjie/r0.6

Merge pull request !3463 from xulei/tmp_0.6

Merge pull request !3478 from yangyongjie/r0.6

Merge pull request !3458 from panfengfeng/fix_getdataset_size_error_r0.6

Merge pull request !3480 from chengang/graceful_shutdown_ps_r0.6

Merge pull request !3402 from lichen/fix_autoparallel_gpu_bug

Merge pull request !3436 from wangqiuliang/fix-mix-precision-r0.6

Merge pull request !3401 from hexia/cpp_client_example_r0.6

Merge pull request !3443 from LiHongzhang/oh_graph_r

Merge pull request !3432 from lijiaqi/add_single_quotes_and_others

Merge pull request !3417 from wangnan39/fix_bug_of_group_lr_when_save_ckpt

Merge pull request !3388 from huanghui/r0.6

Merge pull request !3428 from lilei/modify_weight_decay_annotation

Merge pull request !3406 from gziyan/fix_optimizer_parallel_r0.6

Merge pull request !3389 from riemann_penn/merger_sparse_hot_fix_to_r0.6

Merge pull request !3410 from vlne-v1/fix_redundant_phi-r0.6

Merge pull request !3379 from caojian05/ms_master_dev

Merge pull request !3380 from lianliguang/r0.6

Merge pull request !3373 from zhangbuxue/support_call_super_when_class_define_in_test_case_

Merge pull request !3363 from leopz/fix_clone

Merge pull request !3365 from hexia/restructure_client_example_r0.6

Merge pull request !3354 from shibeiji/r0.6

Merge pull request !3359 from kisnwang/r0.6-cpu-support-nonop-net

Merge pull request !3347 from YuJianfeng/r0.6