fix: use pointer for minor in device crd

[jasonliu747]

Signed-off-by: Jason Liu jasonliu747@gmail.com

Ⅰ. Describe what this PR does

Use a pointer for the minor field, so that the zero value of the JSON type can be differentiated from the missing value.

Ⅱ. Does this pull request fix one issue?

fixes #655

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[hormes]

@buptcozy please review this pr

[jasonliu747]

/hold
CI keeps failing, havn't figured it out yet.

[jasonliu747]

/hold cancel

[codecov]

Codecov Report

Base: 68.87% // Head: 68.83% // Decreases project coverage by -0.03% ⚠️

Coverage data is based on head (e9e4fa7) compared to base (8642578).
Patch coverage: 87.50% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #656      +/-   ##
==========================================
- Coverage   68.87%   68.83%   -0.04%     
==========================================
  Files         203      203              
  Lines       22906    22929      +23     
==========================================
+ Hits        15776    15784       +8     
- Misses       6031     6044      +13     
- Partials     1099     1101       +2     

Flag	Coverage Δ
unittests	68.83% <87.50%> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...kg/scheduler/plugins/deviceshare/device_handler.go	92.06% <50.00%> (ø)
pkg/koordlet/reporter/reporter.go	54.40% <100.00%> (ø)
pkg/koordlet/statesinformer/states_device_linux.go	42.70% <100.00%> (+0.29%)	⬆️
pkg/koordlet/runtimehooks/reconciler/reconciler.go	71.57% <0.00%> (-9.48%)	⬇️
pkg/scheduler/plugins/elasticquota/controller.go	65.33% <0.00%> (-2.73%)	⬇️
pkg/util/httputil/reverseproxy.go	84.30% <0.00%> (-0.80%)	⬇️
...eduler/plugins/coscheduling/controller/podgroup.go	72.27% <0.00%> (-0.14%)	⬇️
...slo-controller/noderesource/resource_calculator.go	100.00% <0.00%> (ø)
pkg/slo-controller/config/config.go	92.30% <0.00%> (+0.24%)	⬆️

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[buptcozy]

/LGTM

[koordinator-bot]

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