Fix WEBHOOK_DISABLE_NAMESPACE_OWNERSHIP env-var

[thesuperzapper]

Changes

• Fixes the implementation from Add WEBHOOK_DISABLE_NAMESPACE_OWNERSHIP env-var #3103
• Previously, the env-var would not properly apply for knative-serving, because the controller (which adds the owner references) is initialized before the webhook starts (so we need to move the env-var override to the controller constructor).

/kind bug

Related knative/serving#15483

Release Note

Fixed `WEBHOOK_DISABLE_NAMESPACE_OWNERSHIP` env-var

Docs

[knative-prow]

Hi @thesuperzapper. Thanks for your PR.

I'm waiting for a knative 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.

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[codecov]

Codecov Report

Attention: Patch coverage is 30.76923% with 9 lines in your changes missing coverage. Please review.

Project coverage is 78.29%. Comparing base (6d10851) to head (eb95a62).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
webhook/configmaps/controller.go	40.00%	2 Missing and 1 partial ⚠️
webhook/resourcesemantics/defaulting/controller.go	25.00%	2 Missing and 1 partial ⚠️
webhook/resourcesemantics/validation/controller.go	25.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3107      +/-   ##
==========================================
- Coverage   78.37%   78.29%   -0.09%     
==========================================
  Files         191      191              
  Lines       11177    11186       +9     
==========================================
- Hits         8760     8758       -2     
- Misses       2153     2162       +9     
- Partials      264      266       +2     

☔ View full report in Codecov by Sentry.
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[thesuperzapper]

@dprotaso Sorry for the quick follow-up, but the implementation in #3103 did not quite work in my testing. This PR fixes it, and I have tested it on the deployKF fork of Knative Serving and it works.

NOTE: this PR is based on #3103 so both need to be cherry-picked into any release branches.

[dprotaso]

/lgtm
/approve

/cherry-pick release-1.16

[knative-prow-robot]

@dprotaso: once the present PR merges, I will cherry-pick it on top of release-1.16 in a new PR and assign it to you.

In response to this:

/lgtm
/approve

/cherry-pick release-1.16

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dprotaso, thesuperzapper

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Needs approval from an approver in each of these files:

• webhook/OWNERS [dprotaso]

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[dprotaso]

/ok-to-test

[knative-prow-robot]

@dprotaso: new pull request created: #3108

In response to this:

/lgtm
/approve

/cherry-pick release-1.16

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.