chore: support to h-scale shard count(pick from d3029e42)

[wangyelei]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 62.50000% with 63 lines in your changes missing coverage. Please review.

Project coverage is 64.79%. Comparing base (8350237) to head (c45b53d).

Files with missing lines	Patch %	Lines
controllers/apps/operations/ops_progress_util.go	64.06%	18 Missing and 5 partials ⚠️
controllers/apps/operations/ops_comp_helper.go	60.71%	14 Missing and 8 partials ⚠️
apis/apps/v1alpha1/opsrequest_webhook.go	0.00%	7 Missing and 1 partial ⚠️
controllers/apps/operations/horizontal_scaling.go	81.08%	5 Missing and 2 partials ⚠️
pkg/controllerutil/sharding_utils.go	0.00%	3 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##           release-0.9    #8530      +/-   ##
===============================================
- Coverage        64.86%   64.79%   -0.07%     
===============================================
  Files              358      358              
  Lines            45539    45655     +116     
===============================================
+ Hits             29540    29584      +44     
- Misses           13368    13433      +65     
- Partials          2631     2638       +7     

Flag	Coverage Δ
unittests	64.79% <62.50%> (-0.07%)	⬇️

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