Fix externalTrafficPolicy #834

Job	Run time
build / Build	6m 44s
Integration Tests (certrotation)	1m 22s
Integration Tests (cacertrotation)	1m 23s
Integration Tests (etcdrestore)	1m 28s
Integration Tests (localstorage)	1m 8s
Integration Tests (startup)	6m 16s
Integration Tests (custometcdargs)	29s
Integration Tests (etcdsnapshot)	7m 4s
Integration Tests (kubeflags)	6m 51s
Integration Tests (longhorn)	2m 23s
Integration Tests (secretsencryption)	2m 18s
Integration Tests (flannelnone)	1m 14s
	38m 40s

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