* Use separate client for leader election in scheduler to avoid starving leader election by regular scheduler operations. ([#53793](https://github.com/kubernetes/kubernetes/pull/53793), [@wojtek-t](https://github.com/wojtek-t))

Mabel, I'll stay down here!  It'll be no use their putting their
heads down and saying "Come up again, dear!"  I shall only look
up and say "Who am I then?  Tell me that first, and then, if I
like being that person, I'll come up:  if not, I'll stay down
here till I'm somebody else"--but, oh dear!' cried Alice, with a
sudden burst of tears, `I do wish they WOULD put their heads
down!  I am so VERY tired of being all alone here!'

* [Federation] Make federation etcd PVC size configurable ([#36310](https://github.com/kubernetes/kubernetes/pull/36310), [@irfanurrehman](https://github.com/irfanurrehman))
* Allow no ports when exposing headless service ([#32811](https://github.com/kubernetes/kubernetes/pull/32811), [@fraenkel](https://github.com/fraenkel))