Move tests from net-certmanager to serving

[skonto]

Which issue(s) this PR fixes:

• Needed by Integrate net-certmanager in Serving serving#15066
• Later we can remove completely the net-certmanager jobs. This is the first PR ofmoving stuff.
• Builds, unit tests etc are covered by the serving jobs.

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: skonto

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[ReToCode]

LGTM. The Serving PR needs to be in first, right?

[dprotaso]

/hold

release is next week and the serving PR hasn't merged. We'll want to revisit this after the release

[dprotaso]

/hold cancel

[dprotaso]

/lgtm

[knative-prow]

@skonto: Updated the job-config configmap in namespace default at cluster default using the following files:

• key serving-main.gen.yaml using file prow/jobs/generated/knative/serving-main.gen.yaml

In response to this:

Which issue(s) this PR fixes:

• Needed by Integrate net-certmanager in Serving serving#15066
• Later we can remove completely the net-certmanager jobs. This is the first PR ofmoving stuff.
• Builds, unit tests etc are covered by the serving jobs.

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