:fix: Credential Marshalling #2510

Job	Run time
Build	5m 19s
test-brokerAcl	17m 2s
test-datastore	15m 21s
test-connection	14m 6s
test-broker	26m 54s
test-device	6m 43s
test-device-management	12m 32s
test-jobsIntegrationBase	10m 11s
test-jobsAndScheduler	2m 46s
test-security	5m 32s
test-tag	2m 25s
test-user	3m 57s
test-userIntegration	8m 21s
test-userIntegrationBase	7m 42s
build-javadoc	10m 10s
junit-tests	8m 21s
test-accountAndTranslator	6m 27s
test-api-auth	6m 48s
test-deviceRegistry	12m 18s
test-endpoint	7m 41s
test-jobEngineRestartOfflineDevice	10m 37s
test-jobEngineRestartOnlineDevice	11m 20s
test-jobEngineRestartOnlineDeviceSecondPart	13m 29s
test-jobEngineServiceStop	13m 55s
test-jobEngineStartOfflineDevice	10m 37s
test-jobEngineStartOnlineDevice	13m 33s
test-jobEngineStepDefinitions	7m 56s
test-jobsIntegration	9m 31s
test-RoleAndGroup	2m 42s
test-api-corsfilter	6m 57s
	4h 51m 13s

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