Rework loadbalancer server selection logic #8826

Job	Run time
build / Build	6m 43s
Integration Tests (certrotation)	1m 27s
Integration Tests (cacertrotation)	1m 24s
Integration Tests (etcdrestore)	1m 32s
Integration Tests (localstorage)	1m 9s
Integration Tests (startup)	6m 54s
Integration Tests (custometcdargs)	36s
Integration Tests (etcdsnapshot)	7m 23s
Integration Tests (kubeflags)	6m 26s
Integration Tests (longhorn)	2m 47s
Integration Tests (secretsencryption)	2m 31s
Integration Tests (flannelnone)	1m 19s
	40m 11s

Provide feedback