[DS-6849][MasterServer] fetch more commands and handle in parallel

[caishunfeng]

this pr close #6849

Purpose of the pull request

To improve the command handle rate by two parts:

• Fetch more commands every time, it can reduce the IO between server and db;
• Use pre exec threads to handle command2ProcessInstance in parallel;

When master slot change, slotCheck and deleteCommandWithTry can ensure that one command will not be processed multiple times.

[codecov-commenter]

Codecov Report

Merging #6850 (a095033) into dev (94f6c5c) will decrease coverage by 0.02%.
The diff coverage is 8.00%.

@@             Coverage Diff              @@
##                dev    #6850      +/-   ##
============================================
- Coverage     33.09%   33.06%   -0.03%     
- Complexity     1621     1622       +1     
============================================
  Files           433      433              
  Lines         14290    14310      +20     
  Branches       1426     1427       +1     
============================================
+ Hits           4729     4732       +3     
- Misses         9111     9127      +16     
- Partials        450      451       +1     

Impacted Files	Coverage Δ
...r/server/master/runner/MasterSchedulerService.java	0.00% <0.00%> (ø)
...inscheduler/server/master/config/MasterConfig.java	69.76% <66.66%> (-0.51%)	⬇️
...er/master/dispatch/host/assign/RandomSelector.java	77.77% <0.00%> (-5.56%)	⬇️

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[kezhenxu94]

Same here, strip the prefix master-

[sonarqubecloud]

SonarCloud Quality Gate failed.   

1 Bug
0 Vulnerabilities
0 Security Hotspots
2 Code Smells

16.8% Coverage
0.0% Duplication

[kezhenxu94]

LGTM

[lenboo]

+1