add e2e for migration rollback feature

[wulemao]

What type of PR is this?

/kind failing-test

What this PR does / why we need it:

add e2e for migration rollback feature

Which issue(s) this PR fixes:

Fixes part of #5577

Special notes for your reviewer:

contains a commit from #5597, waiting for it being merged and doing a rebase

Does this PR introduce a user-facing change?:

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[wulemao]

/hold waiting for #5597 be merged

[chaosi-zju]

I prefer to change the file name seamless_migration_test.go to migration_and_rollback_test.go since it now contains not only migration feature

[chaosi-zju]

according to #5597 (comment), we can add testing wthether the related labels is cleaned after rollback~

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 32.25806% with 42 lines in your changes missing coverage. Please review.

Project coverage is 35.24%. Comparing base (eaa3452) to head (0133c2d).
Report is 6 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/detector/detector.go	0.00%	17 Missing ⚠️
pkg/controllers/execution/execution_controller.go	43.75%	7 Missing and 2 partials ⚠️
pkg/controllers/binding/common.go	27.27%	8 Missing ⚠️
pkg/util/helper/work.go	0.00%	2 Missing ⚠️
pkg/controllers/mcs/service_export_controller.go	0.00%	1 Missing ⚠️
...clusterservice/endpointslice_collect_controller.go	0.00%	1 Missing ⚠️
...lusterservice/endpointslice_dispatch_controller.go	0.00%	0 Missing and 1 partial ⚠️
.../controllers/multiclusterservice/mcs_controller.go	0.00%	0 Missing and 1 partial ⚠️
...controllers/namespace/namespace_sync_controller.go	0.00%	0 Missing and 1 partial ⚠️
...controllers/unifiedauth/unified_auth_controller.go	0.00%	0 Missing and 1 partial ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5609      +/-   ##
==========================================
+ Coverage   35.01%   35.24%   +0.22%     
==========================================
  Files         645      646       +1     
  Lines       44861    44891      +30     
==========================================
+ Hits        15708    15820     +112     
+ Misses      27938    27836     -102     
- Partials     1215     1235      +20     

Flag	Coverage Δ
unittests	35.24% <32.25%> (+0.22%)	⬆️

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[a7i]

@wulemao thanks for your patience, would you please rebase since the PR was merged?