[Feature][PyDolphinScheduler] Add Sagemaker YAML example define in pyds

[jieguangzhou]

Purpose of the pull request

close: #11921

Brief change log

• add YAML example
• Add the document

#Define the workflow
workflow:
  name: "Sagemaker"
  release_state: "offline"

# Define the tasks under the process
tasks:
  - name: sagemaker
    task_type: Sagemaker
    sagemaker_request_json: $FILE{"example_sagemaker_params.json"}

Verify this pull request

This pull request is code cleanup without any test coverage.

(or)

This pull request is already covered by existing tests, such as (please describe tests).

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This change added tests and can be verified as follows:

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[codecov-commenter]

Codecov Report

Merging #11925 (d551b38) into dev (864a908) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##                dev   #11925      +/-   ##
============================================
- Coverage     38.69%   38.66%   -0.03%     
+ Complexity     3999     3998       -1     
============================================
  Files          1003     1003              
  Lines         36559    36559              
  Branches       4222     4222              
============================================
- Hits          14145    14137       -8     
- Misses        20808    20817       +9     
+ Partials       1606     1605       -1     

Impacted Files	Coverage Δ
...eduler/server/worker/task/WorkerHeartBeatTask.java	69.38% <0.00%> (-8.17%)	⬇️
...erver/master/processor/queue/TaskEventService.java	75.00% <0.00%> (-5.36%)	⬇️
...r/plugin/task/sqoop/parameter/SqoopParameters.java	55.12% <0.00%> (-1.29%)	⬇️

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[jieguangzhou]

@zhongjiajie PTAL, thanks

[zhongjiajie]

LGTM overall

[zhongjiajie]

waiting for CI

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
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No Coverage information
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[jieguangzhou]

@zhongjiajie PTAL, thanks