chore: support switchover for sharding components

[wangyelei]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 43.68932% with 58 lines in your changes missing coverage. Please review.

Project coverage is 64.43%. Comparing base (17a521d) to head (a0bfc73).
Report is 1 commits behind head on release-0.9.

Files with missing lines	Patch %	Lines
apis/apps/v1alpha1/opsrequest_webhook.go	33.33%	37 Missing and 3 partials ⚠️
controllers/apps/operations/switchover.go	60.00%	11 Missing and 3 partials ⚠️
apis/apps/v1alpha1/opsrequest_types.go	40.00%	2 Missing and 1 partial ⚠️
controllers/apps/operations/switchover_util.go	66.66%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##           release-0.9    #8786      +/-   ##
===============================================
- Coverage        64.56%   64.43%   -0.14%     
===============================================
  Files              359      359              
  Lines            46301    46348      +47     
===============================================
- Hits             29896    29863      -33     
- Misses           13725    13787      +62     
- Partials          2680     2698      +18     

Flag	Coverage Δ
unittests	64.43% <43.68%> (-0.14%)	⬇️

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