Resolve "Relevance Ranking in Metadata"

Required MRs to be merged before

• codeabilitysharingpluginapi!2 (merged)
• !217 (merged)
• codeabilitysharingpluginapi!3 (merged)

Related to #439 (closed)

src/test/java/at/ac/uibk/gitsearch/repository/search/testESService/ElasticSearchTestConfiguration.java

@@ -4,10 +4,12 @@ import at.ac.uibk.gitsearch.domain.util.TreeNode;
 import at.ac.uibk.gitsearch.repository.search.ElasticSearchRepository;
 import at.ac.uibk.gitsearch.repository.search.MetaDataRepository;
 import at.ac.uibk.gitsearch.repository.search.SearchRepositoryConstants;
+
 import co.elastic.clients.elasticsearch.ElasticsearchClient;
 import co.elastic.clients.elasticsearch._types.query_dsl.BoolQuery;
 import co.elastic.clients.elasticsearch.core.SearchResponse;
 import co.elastic.clients.transport.rest_client.RestClientTransport;
+
 import com.fasterxml.jackson.core.JsonGenerationException;
 import com.fasterxml.jackson.core.JsonParseException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
@@ -20,6 +22,7 @@ import com.github.dockerjava.api.command.CreateContainerCmd;
 import com.github.dockerjava.api.model.ExposedPort;
 import com.github.dockerjava.api.model.PortBinding;
 import com.github.dockerjava.api.model.Ports;
+
 import java.io.File;
 import java.io.IOException;
 import java.io.StringWriter;
@@ -39,6 +42,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.function.Consumer;
 import java.util.stream.Collectors;
+
 import org.apache.commons.lang3.StringUtils;
 import org.apache.http.HttpHost;
 import org.codeability.sharing.plugins.api.search.GitProjectDTO;
@@ -290,7 +294,7 @@ public class ElasticSearchTestConfiguration {
                         : (relativePath.substring(slashPos + 1) + "/" + metaDataFile.getName());
                     file.setPath(projectRelativePath);
                     file.setIndexing_date(Instant.now());
-                    file.setCommit_id("Unused Commit Id");
+                        file.setCommit_id(gitProject.getCommit_id());
                     file.setChildren(
                         ancestors.stream().map(node -> node.getData().getExerciseId()).collect(Collectors.toList()).toArray(new String[] {})
                     );