Add class Message, AddrStorage

Add Kernel folder

Add consistent hash ring

Add updater for server.

Add iteration timer

Add executor for server

From: @zhoufeng54
Reviewed-by: 
Signed-off-by:

From: @luoyang42
Reviewed-by: @tiancixiao
Signed-off-by:

Signed-off-by: zhoufeng <zhoufeng54@huawei.com>

From: @anancds
Reviewed-by: 
Signed-off-by:

The basic idea is: exploits data dependency to control the execution order
of side-effect operations, and keep the semantics of ANF unchanged.

The ControlDepend primitive is removed and there are two primitives added:

1. UpdateState:
```
  a = Assign(para, value)
```
became:
```
  a = Assign(para, value, u)
  u = UpdateState(u, a)
```

2. Load:
```
  x = Add(para, value)
```
became:
```
  p = Load(para, u)
  x = Add(p, value)
  u = UpdateState(u, p)
```

From: @zhupuxu
Reviewed-by: 
Signed-off-by:

Signed-off-by: zhupuxu <zhupuxu@huawei.com>

Signed-off-by: zhoufeng <zhoufeng54@huawei.com>

1. Update akg submodule
2. Refactor akg_kernel_build, akg_ascend_kernel_build, akg_gpu_kernel_build
3. Add akg_kernel_json_decoder to support converting kernel_json to AnfNode.
4. Add GraphKernel Cost Model. (mindspore/_extends/graph_kernel)
5. Add some GraphKernel passes to GpuSession, move these passes to backend/optimizer/graph_kernel.
6. Add global id for ir files.
7. Fix bug in ConstInputToAttr.

Signed-off-by: zhoufeng <zhoufeng54@huawei.com>

Merge pull request !4622 from hexia/http_init

Signed-off-by: zhoufeng <zhoufeng54@huawei.com>

add join for ref

adjust env eliminate to eliminate all env ops

add partial app cache

resolve while endless

fix env eliminate

support for "for while" cases

fix join shape error

Merge pull request !4268 from liubuyu/master

Merge pull request !3807 from 徐永飞/master