Failing tests due to translated errors

[grubeninspekteur]

Observed with commit id: e2b63be

14 tests fail for gradlew build on my machine (org.springframework.integration.config.xml.ChainElementsFailureTests and org.springframework.integration.file.config.ChainElementsTests) as they assert translated error messages:

org.opentest4j.AssertionFailedError: 
Expecting:
 <"cvc-complex-type.3.2.2: Attribut 'input-channel' darf nicht in Element 'int:aggregator' vorkommen.">
to be equal to:
 <"cvc-complex-type.3.2.2: Attribute 'input-channel' is not allowed to appear in element 'int:aggregator'.">
but was not.
...

The tests should set the default locale of the VM prior to execution.