OZG-5841 OZG-5952 Rework properties for Behoerdenkennung

alfa-server/src/main/resources/application-local.yml

alfa-server/src/main/resources/application.yml

...cloud/alfa/export/AmbiguousCodelistePatternException.java

...ain/java/de/ozgcloud/alfa/export/ExportConfiguration.java

...loud/alfa/export/XdomeaBehoerdenschluesselProperties.java

.../export/XdomeaBehoerdenschluesselPropertiesValidator.java

...c/main/java/de/ozgcloud/alfa/export/XdomeaProperties.java

...a/src/main/java/de/ozgcloud/alfa/vorgang/KopfCreator.java

.../alfa/export/XdomeaBehoerdenschluesselPropertiesTest.java

...ort/XdomeaBehoerdenschluesselPropertiesValidatorTest.java

.../de/ozgcloud/alfa/export/XdomeaPropertiesTestFactory.java

...c/test/java/de/ozgcloud/alfa/vorgang/KopfCreatorTest.java