Merge pull request !2409 from amongo/AddTensorSetItemSTCases

Merge pull request !2535 from amongo/FixPynativeTensorIndexing

Merge pull request !1393 from chenweifeng/adam_weight_decay

Merge pull request !2245 from hewei/decouple_tensor

Merge pull request !2499 from yihuaijie/master

* change slice setitem to mixed procedure
* add testcase for slice assignment

Merge pull request !1950 from vlne-v1/move-flags-to-construct

Merge pull request !2492 from YuJianfeng/master

Merge pull request !2303 from gziyan/modify_lars_interface

Merge pull request !2441 from chenzhongming/master

Merge pull request !2180 from chenweifeng/gelu-fp16

Merge pull request !2424 from xutianchun/ctcloss

Merge pull request !2369 from baihuawei/reduce

- It provides a unified style to express graph and kernel for user.
- It provides a unified IR to represent graph and kernel for developer.
- It breaks the boundary between graph and kernel.
- It provides more opportunities to do compile optimization.

Merge pull request !2397 from zhaoting/ResNet50_st

Merge pull request !2388 from VectorSL/bert-eval

Merge pull request !2060 from amongo/SupportPynativeSetItem

Merge pull request !2338 from chenweifeng/nezha

support for tensor setitem

add support for tensor assgin

Merge pull request !2379 from zyli2020/change_ftrl_op_st

Merge pull request !2259 from pkuliuliu/master

Merge pull request !2337 from chenzhongming/master

I added a SummaryCollector to help users automatically collect information
such as the network, loss, learning rate and so on, making it easier to collect this information.

It also can collect train lineage and eval lineage information which is
collected by TrainLineage Callback and EvalLineage Callback in
MindInsight.

I also add some UT for SummaryCollect to keep the code correct.

Merge pull request !2315 from yanzhenxiang2020/add_pack_open

Merge pull request !2161 from vlne-v1/I1IZV3-quant-infer

Merge pull request !1663 from wukesong/change_network_path

Merge pull request !2272 from wangnan39/remove_dataset_send_from_model_init

Merge pull request !2282 from chenzhongming/master