SystemTestFrameworkIntTest tests are flaky

[de-jcup]

Description

Tests from SystemTestFrameworkIntTest do not work on MAC (but Linux) and sometimes not on Github action as well.

Wanted

Shall run always and be not flaky

[de-jcup]

Here an example test report where the tests were flaky on a github workflow
flakey-systemtests-combined-sechub-testreport.zip

[de-jcup]

09:41:28.061 [Test worker] ERROR com.mercedesbenz.sechub.systemtest.runtime.testengine.SystemTestRuntimeTestEngine -- Test: test1 failed: Was not able to launch SecHub job. Reason: com.fasterxml.jackson.databind.exc.MismatchedInputException: Input mismatch reading Enum `com.mercedesbenz.sechub.api.internal.gen.model.TrafficLig...
com.mercedesbenz.sechub.api.internal.gen.invoker.ApiException: com.fasterxml.jackson.databind.exc.MismatchedInputException: Input mismatch reading Enum `com.mercedesbenz.sechub.api.internal.gen.model.TrafficLight`: properties-based `@JsonCreator` ([method com.mercedesbenz.sechub.api.internal.gen.model.TrafficLight#fromValue(java.lang.String)]) expects String Value, got Object value (`JsonToken.START_OBJECT`)
 at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 1, column: 262] (through reference chain: com.mercedesbenz.sechub.api.internal.gen.model.ScheduleJobStatus["messages"]->java.util.ArrayList[0])
	at com.mercedesbenz.sechub.api.internal.gen.SecHubExecutionApi.userCheckJobStatusWithHttpInfo(SecHubExecutionApi.java:295)
	at com.mercedesbenz.sechub.api.internal.gen.SecHubExecutionApi.userCheckJobStatus(SecHubExecutionApi.java:262)
	at com.mercedesbenz.sechub.systemtest.runtime.testengine.SystemTestRuntimeTestEngine.launchSecHubJob(SystemTestRuntimeTestEngine.java:383)
	at com.mercedesbenz.sechub.systemtest.runtime.testengine.SystemTestRuntimeTestEngine.executeTest(SystemTestRuntimeTestEngine.java:310)
	at com.mercedesbenz.sechub.systemtest.runtime.testengine.SystemTestRuntimeTestEngine.runTest(SystemTestRuntimeTestEngine.java:90)
	at com.mercedesbenz.sechub.systemtest.runtime.SystemTestRuntime.handleTests(SystemTestRuntime.java:182)
	at com.mercedesbenz.sechub.systemtest.runtime.SystemTestRuntime.runAfterInitialization(SystemTestRuntime.java:120)
	at com.mercedesbenz.sechub.systemtest.runtime.SystemTestRuntime.run(SystemTestRuntime.java:77)
	at com.mercedesbenz.sechub.systemtest.SystemTestAPI.runSystemTests(SystemTestAPI.java:65)
	at com.mercedesbenz.sechub.systemtest.SystemTestFrameworkIntTest.even_integration_test_setup_can_be_tested__codescan_with_binary_and_sources(SystemTestFrameworkIntTest.java:245)
	...
Caused by: com.fasterxml.jackson.databind.exc.MismatchedInputException: Input mismatch reading Enum `com.mercedesbenz.sechub.api.internal.gen.model.TrafficLight`: properties-based `@JsonCreator` ([method com.mercedesbenz.sechub.api.internal.gen.model.TrafficLight#fromValue(java.lang.String)]) expects String Value, got Object value (`JsonToken.START_OBJECT`)
 at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 1, column: 262] (through reference chain: com.mercedesbenz.sechub.api.internal.gen.model.ScheduleJobStatus["messages"]->java.util.ArrayList[0])
	at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:59)
	at com.fasterxml.jackson.databind.DeserializationContext.reportInputMismatch(DeserializationContext.java:1767)
	at com.fasterxml.jackson.databind.deser.std.FactoryBasedEnumDeserializer.deserialize(FactoryBasedEnumDeserializer.java:172)
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer._deserializeFromArray(CollectionDeserializer.java:361)
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:246)
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:30)
	at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:129)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:310)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:177)
	at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:342)
	at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4905)
	at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3893)
	at com.mercedesbenz.sechub.api.internal.gen.SecHubExecutionApi.userCheckJobStatusWithHttpInfo(SecHubExecutionApi.java:290)
	... 94 common frames omitted

...
09:41:28.542 [Test worker] INFO com.mercedesbenz.sechub.systemtest.runtime.SystemTestRuntime -- 
------------------------------
 System test result [FAILED]
------------------------------
 - Tests run   : 1
 - Tests failed: 1
 
  Failed tests:
   * 'test1' : Was not able to launch SecHub job. Reason: com.fasterxml.jackson.databind.exc.MismatchedInputException: Input mismatch reading Enum `com.mercedesbenz.sechub.api.internal.gen.model.TrafficLig...

>>> Testsuite 'com.mercedesbenz.sechub.systemtest.SystemTestFrameworkIntTest' System.err:
SLF4J(I): Connected with provider of type [ch.qos.logback.classic.spi.LogbackServiceProvider]

Means: we have here a jackson deserialization problem - which should not happen!