Update top_flakes with the current list of flakes

[markapruett]

What would you like to be added: Our list of flakes should be updated from the upstream list https://github.com/kubernetes/community/blob/master/contributors/devel/sig-testing/flaky-tests.md

Let's also consider breaking this down by release version instead of as a group.

Why is this needed: The list hasn't been updated since last year.