Fix snapshot flake #2123

Job	Run time
build / Build	6m 54s
Integration Tests (certrotation)	2m 0s
Integration Tests (cacertrotation)	2m 8s
Integration Tests (etcdrestore)	2m 8s
Integration Tests (localstorage)	2m 5s
Integration Tests (startup)	6m 34s
Integration Tests (custometcdargs)	1m 21s
Integration Tests (etcdsnapshot)	8m 8s
Integration Tests (kubeflags)	7m 7s
Integration Tests (longhorn)	3m 23s
Integration Tests (secretsencryption)	2m 47s
Integration Tests (flannelnone)	1m 52s
	46m 27s

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