Add imgpkg copy test case

[YangJiao0817]

Add this test case to make sure imgpkg copy to Harbor works.

Signed-off-by: Yang Jiao jiaoya@vmware.com

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Comprehensive Summary of your change

Issue being fixed

Fixes #16758

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• Well Written Title and Summary of the PR
• Label the PR as needed. "release-note/ignore-for-release, release-note/new-feature, release-note/update, release-note/enhancement, release-note/community, release-note/breaking-change, release-note/docs, release-note/infra, release-note/deprecation"
• Accepted the DCO. Commits without the DCO will delay acceptance.
• Made sure tests are passing and test coverage is added if needed.
• Considered the docs impact and opened a new docs issue or PR with docs changes if needed in website repository.

[codecov]

Codecov Report

Merging #16760 (18b9856) into main (bb53493) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main   #16760      +/-   ##
==========================================
- Coverage   67.33%   67.31%   -0.03%     
==========================================
  Files         956      956              
  Lines       79203    79203              
  Branches     2332     2332              
==========================================
- Hits        53331    53315      -16     
- Misses      22270    22288      +18     
+ Partials     3602     3600       -2     

Flag	Coverage Δ
unittests	67.31% <ø> (-0.03%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/controller/event/handler/auditlog/auditlog.go	8.69% <0.00%> (-47.83%)	⬇️
...g-retention-tasks/tag-retention-tasks.component.ts	60.00% <0.00%> (-25.72%)	⬇️
...ortal/src/app/shared/pipes/harbor-datetime.pipe.ts	50.00% <0.00%> (-25.00%)	⬇️
src/controller/event/topic.go	1.80% <0.00%> (-7.21%)	⬇️
src/common/utils/passports.go	84.61% <0.00%> (-5.13%)	⬇️
src/portal/src/app/shared/units/shared.utils.ts	33.76% <0.00%> (-2.60%)	⬇️
src/jobservice/runner/redis.go	67.82% <0.00%> (+5.21%)	⬆️
...tegration/tag-retention/tag-retention.component.ts	35.65% <0.00%> (+5.21%)	⬆️

[wy65701436]

lgtm