Support exec readiness probes for sidecar containers

[FloMedja]

Fixes #15484

Proposed Changes

Delegate the exec readiness probes to kubernetes for sidecar containers. The controller previsouly return an error when a exec readiness probes is defined on a sidecar container. We now support the exec readiness probes for all the containers.

Release Note

Support exec readiness probes for sidecar containers

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: FloMedja / name: Florian MEDJA (a2f121f, c14663c)

[knative-prow]

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[knative-prow]

Welcome @FloMedja! It looks like this is your first PR to knative/serving 🎉

[knative-prow]

Hi @FloMedja. 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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[dprotaso]

/ok-to-test

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.82%. Comparing base (4994b59) to head (a2f121f).

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #15773      +/-   ##
==========================================
- Coverage   80.83%   80.82%   -0.02%     
==========================================
  Files         222      222              
  Lines       18075    18078       +3     
==========================================
  Hits        14611    14611              
- Misses       3094     3096       +2     
- Partials      370      371       +1     

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[FloMedja]

@dprotaso @skonto A e2e test failed for v1.30.x but succeeded for v1.31.x. I don't see an option to rerun the test. How can I rerun it ?

Also I see a MR removing the support for v.1.30.x, was there some issues with this version ?