Bump kine to v0.13.8 #2183

Job	Run time
build / Build	7m 14s
Integration Tests (certrotation)	1m 58s
Integration Tests (cacertrotation)	1m 59s
Integration Tests (etcdrestore)	2m 13s
Integration Tests (localstorage)	1m 53s
Integration Tests (startup)	7m 5s
Integration Tests (custometcdargs)	1m 18s
Integration Tests (etcdsnapshot)	8m 5s
Integration Tests (kubeflags)	7m 35s
Integration Tests (longhorn)	3m 8s
Integration Tests (secretsencryption)	2m 35s
Integration Tests (flannelnone)	1m 49s
	46m 52s

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