🐛 Avoid multiple GuiceLocator instances, and handle potential multiple KapuaMessageListeners #2594

Job	Run time
Build	5m 49s
test-brokerAcl	17m 32s
test-broker	26m 40s
test-connection	45m 20s
test-datastore	15m 10s
test-device	4m 52s
test-device-management	12m 5s
test-security	5m 26s
test-tag	2m 25s
test-user	3m 43s
test-userIntegration	8m 10s
test-userIntegrationBase	7m 45s
junit-tests	8m 42s
test-accountAndTranslator	6m 11s
test-api-auth	6m 27s
test-deviceRegistry	12m 1s
test-endpoint	7m 45s
test-jobEngineRestartOfflineDevice	9m 57s
test-jobEngineRestartOnlineDevice	13m 4s
test-jobEngineRestartOnlineDeviceSecondPart	11m 13s
test-jobEngineServiceStop	13m 16s
test-jobEngineStartOfflineDevice	11m 6s
test-jobEngineStartOnlineDevice	13m 29s
test-jobEngineStepDefinitions	7m 54s
test-jobsAndScheduler	2m 54s
test-jobsIntegration	9m 25s
test-jobsIntegrationBase	9m 39s
test-RoleAndGroup	2m 45s
build-javadoc	10m 11s
test-api-corsfilter	6m 51s
	5h 17m 47s

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