Update documentation and remove hack fixed by upstream cookie library

[BrianKopp]

This PR resolves two follow-up comments on #4949. First, it clarifies documentation as requested in comment. Second, it removes hack that was required since resty-cookie library did not allow SameSite=None - this has been fixed in upstream and merged into base image in #5011.

What this PR does / why we need it:

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Which issue/s this PR fixes

How Has This Been Tested?

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have added tests to cover my changes.
• All new and existing tests passed.

[k8s-ci-robot]

Hi @BrianKopp. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[aledbf]

/ok-to-test

[codecov-io]

Codecov Report

Merging #5040 into master will increase coverage by 1.4%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #5040     +/-   ##
=========================================
+ Coverage   58.57%   59.97%   +1.4%     
=========================================
  Files          88       88             
  Lines        6843     7168    +325     
=========================================
+ Hits         4008     4299    +291     
- Misses       2398     2413     +15     
- Partials      437      456     +19

Impacted Files	Coverage Δ
internal/ingress/metric/collectors/process.go	90.62% <0%> (+2.08%)	⬆️
internal/ingress/controller/template/template.go	82.7% <0%> (+2.73%)	⬆️

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[BrianKopp]

Will do some more extensive manual testing tomorrow before I'm OK putting this as not Draft

[aledbf]

@BrianKopp any chance you can change the state of the PR?

This will be the last PR before 0.29. The plan is to release the version Thursday or Friday.

[BrianKopp]

Yes, I'll get it tested today to confirm and get it moved. Sorry for the delay!

[aledbf]

/test all

[aledbf]

/lgtm
/approve

[aledbf]

@BrianKopp thanks!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aledbf, BrianKopp

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• OWNERS [aledbf]

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