Skip lease with empty holder

[skonto]

Changes

• See TestControllerHA is flakey serving#15238 and [WIP][TEST-ONLY] Test lease holder with empty string serving#15251 (comment)
• Leases don't seem to be garbage collected when tested locally (not even after 1h as stated in docs).
  Knative creates leases without owner refs.

/kind

Fixes #

Release Note

Docs

[knative-prow]

@skonto: The label(s) kind/<kind> cannot be applied, because the repository doesn't have them.

In response to this:

Changes

• See TestControllerHA is flakey serving#15238 and [WIP][TEST-ONLY] Test lease holder with empty string serving#15251 (comment)
• Leases don't seem to be garbage collected when tested locally (not even after 1h as stated in docs).
  Knative creates leases without owner refs.

/kind

Fixes #

Release Note

Docs

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.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.73%. Comparing base (03bf3de) to head (da2e316).
Report is 33 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3042      +/-   ##
==========================================
- Coverage   78.75%   78.73%   -0.02%     
==========================================
  Files         188      189       +1     
  Lines       11107     8873    -2234     
==========================================
- Hits         8747     6986    -1761     
+ Misses       2094     1621     -473     
  Partials      266      266              

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[dprotaso]

/lgtm
/approve

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

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

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