🐛 Avoid multiple GuiceLocator instances, and handle potential multiple KapuaMessageListeners #2593

Job	Run time
Build	4m 36s
test-device	0s
test-broker	0s
test-tag	0s
test-brokerAcl	0s
test-connection	0s
test-datastore	0s
test-device-management	0s
test-security	0s
test-userIntegrationBase	0s
test-accountAndTranslator	0s
test-user	0s
test-jobEngineStepDefinitions	0s
test-jobsAndScheduler	0s
test-jobsIntegration	0s
test-jobsIntegrationBase	0s
test-userIntegration	0s
test-jobEngineRestartOfflineDevice	0s
test-jobEngineRestartOnlineDevice	0s
test-jobEngineRestartOnlineDeviceSecondPart	0s
test-jobEngineServiceStop	0s
test-jobEngineStartOfflineDevice	0s
test-jobEngineStartOnlineDevice	0s
test-RoleAndGroup	0s
build-javadoc	0s
junit-tests	0s
test-api-auth	0s
test-deviceRegistry	0s
test-endpoint	0s
test-api-corsfilter	0s
	4m 36s

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