Added tests from query service to metadata service

dbrepo-metadata-service/pom.xml

...src/main/java/at/tuwien/validation/EndpointValidator.java

...e/src/test/java/at/tuwien/annotations/MockOpensearch.java

...rc/test/java/at/tuwien/config/MariaDbContainerConfig.java

...test/java/at/tuwien/endpoints/ExportEndpointUnitTest.java

.../test/java/at/tuwien/endpoints/QueryEndpointUnitTest.java

.../test/java/at/tuwien/endpoints/StoreEndpointUnitTest.java

...t/java/at/tuwien/endpoints/TableDataEndpointUnitTest.java

...ava/at/tuwien/endpoints/TableHistoryEndpointUnitTest.java

...c/test/java/at/tuwien/endpoints/ViewEndpointUnitTest.java

...a/at/tuwien/listener/RabbitMqListenerIntegrationTest.java

...rvice/src/test/java/at/tuwien/mapper/QueryMapperTest.java

...rvice/src/test/java/at/tuwien/mapper/StoreMapperTest.java

...t/tuwien/repository/ViewIdxRepositoryIntegrationTest.java

...a/at/tuwien/repository/ViewRepositoryIntegrationTest.java

...va/at/tuwien/service/ContainerServiceIntegrationTest.java

...t/java/at/tuwien/service/QueryServiceIntegrationTest.java

...t/java/at/tuwien/service/QueueServiceIntegrationTest.java

.../at/tuwien/service/StoreServiceIntegrationModifyTest.java

...va/at/tuwien/service/StoreServiceIntegrationReadTest.java