Merge pull request #4053 from dseurotech/fix-credentials_marshalling #2512

Job	Run time
Build	5m 30s
junit-tests	8m 40s
build-javadoc	10m 25s
test-api-auth	6m 37s
test-accountAndTranslator	6m 15s
test-broker	26m 17s
test-brokerAcl	17m 17s
test-connection	14m 3s
test-datastore	15m 14s
test-device	5m 2s
test-device-management	13m 0s
test-deviceRegistry	12m 0s
test-endpoint	8m 14s
test-jobEngineRestartOfflineDevice	10m 5s
test-jobEngineRestartOnlineDevice	13m 25s
test-jobEngineRestartOnlineDeviceSecondPart	13m 20s
test-jobEngineServiceStop	13m 48s
test-jobEngineStartOfflineDevice	11m 54s
test-jobEngineStartOnlineDevice	13m 18s
test-jobsAndScheduler	2m 47s
test-jobEngineStepDefinitions	8m 5s
test-jobsIntegration	9m 39s
test-jobsIntegrationBase	9m 39s
test-security	5m 54s
test-RoleAndGroup	2m 46s
test-tag	2m 19s
test-user	3m 49s
test-userIntegration	8m 14s
test-userIntegrationBase	7m 48s
test-api-corsfilter	7m 44s
	4h 53m 8s

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