feat: set NPROC in intergration test

[dl239]

SELFHOST-INTEGRATION-TEST takes too much time in build stage now as OpenMLDB use one thread to compile by default. we can set NPROC to compile in parallel

[tobegit3hub]

LGTM

[github-actions]

SDK Test Report

101 files  101 suites   2m 6s ⏱️
345 tests 331 ✅ 14 💤 0 ❌
471 runs  457 ✅ 14 💤 0 ❌

Results for commit 1848a3d.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.92%. Comparing base (ad4eace) to head (1848a3d).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #3782   +/-   ##
=========================================
  Coverage     74.92%   74.92%           
  Complexity      658      658           
=========================================
  Files           737      737           
  Lines        132541   132541           
  Branches       1380     1380           
=========================================
+ Hits          99300    99308    +8     
+ Misses        32937    32929    -8     
  Partials        304      304           

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[github-actions]

Linux Test Report

    57 files     244 suites   1h 19m 4s ⏱️
12 585 tests 12 578 ✅ 7 💤 0 ❌
17 842 runs  17 835 ✅ 7 💤 0 ❌

Results for commit 1848a3d.