scheduler: support devices of the same node gpuMem not equal

[ZiMengSheng]

Ⅰ. Describe what this PR does

Ⅱ. Does this pull request fix one issue?

fixes #2191

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

[codecov]

Codecov Report

Attention: Patch coverage is 86.20690% with 4 lines in your changes missing coverage. Please review.

Project coverage is 67.72%. Comparing base (4f16162) to head (fca3ced).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...scheduler/plugins/deviceshare/devicehandler_gpu.go	92.30%	1 Missing and 1 partial ⚠️
pkg/scheduler/plugins/deviceshare/plugin.go	33.33%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2199      +/-   ##
==========================================
- Coverage   67.72%   67.72%   -0.01%     
==========================================
  Files         446      446              
  Lines       42697    42705       +8     
==========================================
+ Hits        28918    28920       +2     
- Misses      11257    11261       +4     
- Partials     2522     2524       +2     

Flag	Coverage Δ
unittests	67.72% <86.20%> (-0.01%)	⬇️

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[saintube]

/lgtm

[ZiMengSheng]

/approve

[ZiMengSheng]

/approve

[ZiMengSheng]

/lgtm

[saintube]

/lgtm

[ZiMengSheng]

/approve