[YUNIKORN-2582]Update atomic.Int32 for atomic operations

[SophieTech88]

What is this PR for?

Type atomic.Int32 was introduced in go 1.19, we should adopt it for better code clarity.

Below variable type should be changed:

1. asyncDispatchCount in dispatcher.go
2. registerCount/UpdateAllocationCount/UpdateApplicationCount/UpdateNodeCount in schedulerapi_mock.go

What type of PR is it?

• - Bug Fix
• - Improvement
• - Feature
• - Documentation
• - Hot Fix
• - Refactoring

Todos

• - Task

What is the Jira issue?

• https://issues.apache.org/jira/browse/YUNIKORN-2582

How should this be tested?

All unit tests should be passed.

Screenshots (if appropriate)

Questions:

• - The licenses files need update.
• - There is breaking changes for older versions.
• - It needs documentation.

[craigcondit]

Assuming PR will be updated with the other locations? (schedulerapi_mock.go)

[SophieTech88]

Assuming PR will be updated with the other locations? (schedulerapi_mock.go)

Hahaha. You are right. The second is coming~

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 7 lines in your changes missing coverage. Please review.

Project coverage is 67.89%. Comparing base (78e1d71) to head (5dbaf18).
Report is 1 commits behind head on master.

Files	Patch %	Lines
pkg/common/test/schedulerapi_mock.go	41.66%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #899      +/-   ##
==========================================
- Coverage   67.91%   67.89%   -0.02%     
==========================================
  Files          70       70              
  Lines        7493     7489       -4     
==========================================
- Hits         5089     5085       -4     
  Misses       2192     2192              
  Partials      212      212              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[craigcondit]

+1 LGTM.