OZG-5044 Renaming

...ava/de/ozgcloud/admin/settings/DataRestConfiguration.java

src/main/java/de/ozgcloud/admin/settings/Setting.java

src/main/java/de/ozgcloud/admin/settings/SettingBody.java

...main/java/de/ozgcloud/admin/settings/SettingConstant.java

...ozgcloud/admin/settings/SettingEnvironmentRepository.java

...in/java/de/ozgcloud/admin/settings/SettingRepository.java

...ain/java/de/ozgcloud/admin/settings/SettingValidator.java

...ozgcloud/admin/settings/postfach/PostfachSettingBody.java

.../de/ozgcloud/admin/settings/SettingEnvironmentITCase.java

...ud/admin/settings/SettingEnvironmentRepositoryITCase.java

...loud/admin/settings/SettingEnvironmentRepositoryTest.java

src/test/java/de/ozgcloud/admin/settings/SettingITCase.java

...t/java/de/ozgcloud/admin/settings/SettingTestFactory.java

...ud/admin/settings/postfach/PostfachSettingBodyITCase.java

...min/settings/postfach/PostfachSettingBodyTestFactory.java