:fix: improve event bus observability #2191

Job	Run time
Build	6m 54s
test-api-auth	6m 42s
junit-tests	8m 27s
test-accountAndTranslator	6m 17s
build-javadoc	10m 26s
test-broker	27m 49s
test-brokerAcl	17m 51s
test-connection	14m 45s
test-datastore	16m 18s
test-device	5m 26s
test-device-management	13m 2s
test-deviceRegistry	12m 53s
test-endpoint	10m 2s
test-jobEngineRestartOfflineDevice	15m 47s
test-jobEngineRestartOnlineDevice	12m 55s
test-jobEngineRestartOnlineDeviceSecondPart	12m 20s
test-jobEngineServiceStop	13m 25s
test-jobEngineStartOnlineDevice	14m 5s
test-jobEngineStartOfflineDevice	11m 18s
test-jobsAndScheduler	10m 39s
test-jobEngineStepDefinitions	9m 2s
test-jobsIntegration	10m 34s
test-jobsIntegrationBase	10m 9s
test-RoleAndGroup	2m 45s
test-security	5m 44s
test-tag	2m 26s
test-user	3m 57s
test-userIntegration	8m 38s
test-userIntegrationBase	8m 26s
	5h 9m 2s

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