Fix `broker` crash on `1.6.x` due to missing dependency #1715

Job	Run time
Build	3m 58s
test-device	3m 49s
test-broker	10m 13s
test-tag	4m 6s
test-brokerAcl	13m 6s
test-device-management	4m 56s
test-account	11m 10s
test-connection	13m 33s
test-datastore	7m 53s
test-jobEngineStartOfflineDevice	11m 27s
test-jobEngineStepDefinitions	5m 32s
test-jobs	29m 34s
test-security	8m 23s
test-triggerService	6m 53s
test-user	9m 55s
build-javadoc	5m 53s
junit-tests	8m 35s
test-jobEngineRestartOfflineDevice	11m 18s
test-jobEngineRestartOnlineDevice	8m 51s
test-jobEngineRestartOnlineDeviceSecondPart	15m 22s
test-jobEngineServiceStop	26m 2s
test-jobEngineStartOnlineDevice	17m 55s
	3h 58m 24s

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