[flaky] test/upgrade.TestContinuousEventsPropagationWithProber

[knative-test-reporter-robot]

Auto-generated issue tracking flakiness of test

• Test name: test/upgrade.TestContinuousEventsPropagationWithProber
• Repository name: eventing

[knative-test-reporter-robot]

Latest result for this test: Flaky
Last build start time: 2020-07-09 10:53:11 +0000 UTC
Failed 2 times out of 10 runs. Failed runs: 1280937967254245376, 1280907768110256128

2020-07-09 10:53:11 +0000 UTC: ◻ ✔ ✔ ◻ ✔ ✔ ✔ ◻ ✖ ✖

✔ Passed ✖ Failed ◻ Skipped

[vaikas]

#3539
Hasn't failed since, closing. I'm sure this will be reopened if that's not the case.