Polish config, expose rpc config in application.yml

[ruanwenjun]

Purpose of the pull request

Brief change log

• Move API related config under API tag
• Expose netty config to master/worker's application.yaml

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).

(or)

This change added tests and can be verified as follows:

(or)

If your pull request contain incompatible change, you should also add it to docs/docs/en/guide/upgrede/incompatible.md

[caishunfeng]

LGTM

[codecov-commenter]

Codecov Report

Merging #14501 (4c837f9) into dev (406aeaf) will decrease coverage by 0.06%.
The diff coverage is 34.21%.

❗ Current head 4c837f9 differs from pull request most recent head a8324f9. Consider uploading reports for the commit a8324f9 to get more accurate results

@@             Coverage Diff              @@
##                dev   #14501      +/-   ##
============================================
- Coverage     38.69%   38.64%   -0.06%     
+ Complexity     4572     4556      -16     
============================================
  Files          1237     1237              
  Lines         43483    43496      +13     
  Branches       4817     4817              
============================================
- Hits          16827    16807      -20     
- Misses        24789    24821      +32     
- Partials       1867     1868       +1     

Impacted Files	Coverage Δ
...che/dolphinscheduler/api/python/PythonGateway.java	17.22% <0.00%> (-0.08%)	⬇️
...e/dolphinscheduler/server/master/MasterServer.java	0.00% <0.00%> (ø)
...inscheduler/server/master/config/MasterConfig.java	1.81% <0.00%> (-0.07%)	⬇️
...inscheduler/server/master/rpc/MasterRPCServer.java	0.00% <0.00%> (ø)
...inscheduler/server/master/rpc/MasterRpcClient.java	7.14% <0.00%> (-2.86%)	⬇️
...inscheduler/server/worker/config/WorkerConfig.java	3.84% <ø> (ø)
...inscheduler/server/worker/rpc/WorkerRpcClient.java	6.66% <0.00%> (+0.41%)	⬆️
...inscheduler/server/worker/rpc/WorkerRpcServer.java	0.00% <0.00%> (ø)
.../server/master/runner/WorkflowExecuteRunnable.java	10.62% <14.28%> (ø)
...olphinscheduler/api/audit/AuditPublishService.java	34.61% <33.33%> (ø)
... and 3 more

... and 2 files with indirect coverage changes

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[sonarcloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
4 Code Smells

33.3% Coverage
0.0% Duplication

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