[1.9 cherry-pick]Add annotation "pv.kubernetes.io/migrated-to" for CSI checking.

[blackpiglet]

1. Also checking annotation "pv.kubernetes.io/migrated-to" to find out whether volume is provisioned by CSI.
2. Add UT cases.

Signed-off-by: Xun Jiang [email protected]

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Does your change fix a particular issue?

Fixes #5149

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• Accepted the DCO. Commits without the DCO will delay acceptance.
• Created a changelog file or added /kind changelog-not-required as a comment on this pull request.
• Updated the corresponding documentation in site/content/docs/main.

[codecov-commenter]

Codecov Report

Merging #5186 (5838e35) into release-1.9 (56eb492) will decrease coverage by 0.01%.
The diff coverage is 55.55%.

@@               Coverage Diff               @@
##           release-1.9    #5186      +/-   ##
===============================================
- Coverage        41.34%   41.33%   -0.02%     
===============================================
  Files              211      211              
  Lines            18438    18433       -5     
===============================================
- Hits              7624     7619       -5     
  Misses           10241    10241              
  Partials           573      573              

Impacted Files	Coverage Δ
pkg/controller/pod_volume_restore_controller.go	22.85% <0.00%> (+0.73%)	⬆️
pkg/util/kube/utils.go	73.79% <64.28%> (-1.59%)	⬇️
pkg/controller/pod_volume_backup_controller.go	44.06% <100.00%> (+0.39%)	⬆️
pkg/restore/restore.go	64.06% <0.00%> (-0.57%)	⬇️

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