Feat/harbor setup podman

[adityachopra29]

Overview

• As discussed in Create dagger function to run CLI tests #585 (comment), instead of using dagger to spin up an instance of harbor in the CI, we would run a podman instance on which tests could be run. This is the implementation for the same.
• Fixes Make tests not Dependent on Demo Server #249

Changes made

• Creates a new workflow (harbor-e2e) which setups Harbor instance and integrated into default workflow
• Uses the repo https://github.com/bupd/harbor-podman, but is modified to be use for non SELinux such as Ubuntu (since github actions runner prefer ubuntu)
• Modifies the e2e tests to use the local harbor instance endpoints, and have demo.goharbor.io as fallback

Testing

• All changes are tested and are working on the CI succesfully (check CI)

[codecov]

Codecov Report

❌ Patch coverage is 0% with 44 lines in your changes missing coverage. Please review.
✅ Project coverage is 7.15%. Comparing base (60ad0bd) to head (ea00ba7).
⚠️ Report is 81 commits behind head on main.

Files with missing lines	Patch %	Lines
test/helper/helpers.go	0.00%	44 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             main    #648      +/-   ##
=========================================
- Coverage   10.99%   7.15%   -3.84%     
=========================================
  Files         173     260      +87     
  Lines        8671   12891    +4220     
=========================================
- Hits          953     922      -31     
- Misses       7612   11861    +4249     
- Partials      106     108       +2     

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[adityachopra29]

Note : Since we are using a local harbor setup using a self-signed certificate, and this helper function is used for it only, it was necessary to add this directive here (to mute lint error).

[adityachopra29]

Hi @bupd @Vad1mo, This PR is ready for review, PTAL.