makefile: support building without dapper #9

Job	Run time
build / Build	6m 37s
Integration Tests (certrotation)	2m 0s
Integration Tests (etcdrestore)	2m 23s
Integration Tests (localstorage)	1m 54s
Integration Tests (startup)	8m 44s
Integration Tests (custometcdargs)	1m 5s
Integration Tests (etcdsnapshot)	8m 47s
Integration Tests (kubeflags)	7m 6s
Integration Tests (longhorn)	3m 5s
Integration Tests (secretsencryption)	2m 21s
Integration Tests (flannelnone)	1m 45s
	45m 47s

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