Automatic merge from submit-queue

Move quota usage testing for loadbalancers into unit tests

Fixes https://github.com/kubernetes/kubernetes/issues/26319

* moved testing for node port and load balancer usage in quota to unit tests
* remove node port and node port -> loadbalancer service testing out of e2e
 * covered already in replenishment_controller_test scenario

Given the time it takes to even allocate a load balancer, it seems better to test that outside of this test case to avoid unnecessary flakes.

/cc @bprashanth