1. Ease the elegant exiting procedure by providing a singleton access pattern. Now the exiting procedure can easily call the exit_non_block method to notify the executors to start exiting worker processes. If the worker processes not exit after a timeout, the mindinsight stop still can kill these processes.

2. Build a framework for managing computing resources used by different businesses. Different businesses can now call the get_executor() API to get their process pool to execute compute heavy tasks outside the mindinsight guinicorn worker process, which will make the restful api respond more quickly.

From: @jiang-shuqiang
Reviewed-by: 
Signed-off-by:

From: @lixiaohui33
Reviewed-by: 
Signed-off-by:

From: @lixiaohui33
Reviewed-by: @ouwenchang,@wangyue01
Signed-off-by: @wangyue01

From: @lixiaohui33
Reviewed-by: @ouwenchang,@lilongfei15
Signed-off-by: @lilongfei15

From: @gzhcv
Reviewed-by: @wenkai_dist
Signed-off-by:

fix that UI cannot get the error when tensor is too large and skip

For example: convert error code from 7 to 111, then to ["nan", "inf", "no_prev_tensor"]
convert error code from 2 to 010, then to ["inf"]

Detail: fix the issue that the 100% process info is printed twice by determining whether the file_handler.offset changed.

When CRC error occurs, it is generally caused by incomplete data in the file, so error information should be given to prompt the user.

Merge pull request !835 from jiangshuqiang/fix_issue

add info when crc check failed.

Merge pull request !837 from wangshuide/wsd1010

Fix when the message is :current process ...100%,convert not finished

Fix When special characters in the tag, the output image file is incomplete

Merge pull request !818 from jiangshuqiang/fix_I22V8C

fix no time unit in table header 'wall_time'

Merge pull request !797 from ougongchang/fix_graph

Reduce cyclomatic complexity and code length in function

Merge pull request !774 from jiangshuqiang/summary_tocsv

we can use the function to transfer summary file to csv file and image so that it is easy to read and process

1. clean redundant code in lineage parsing and querier

2. delete get_summary_lineage()

3. modify related st and ut to use data_manager

Merge pull request !699 from wangshuide/wsd_merged_debug