OZG-7346: Try out java17 and builder

Jenkinsfile

@@ -24,7 +24,7 @@
 pipeline {
     agent {
        node {
-           label 'ozgcloud-jenkins-build-agent-jdk21'
+           label 'ozgcloud-jenkins-build-agent'
         }
     }
 

ozgcloud-elasticsearch-operator/src/test/java/de/ozgcloud/operator/common/elasticsearch/ElasticsearchTestClient.java

@@ -39,7 +39,7 @@ import co.elastic.clients.transport.rest_client.RestClientTransport;
 
 public class ElasticsearchTestClient {
 	
-	private static final String IMAGE_NAME = "docker.elastic.co/elasticsearch/elasticsearch:8.16.1";
+	private static final String IMAGE_NAME = "docker.elastic.co/elasticsearch/elasticsearch:8.11.3";
 	private static final String USER = "elastic";
 	private static final String PASSWORD = "s3cret";
 	private static final int PORT = 9200;
@@ -57,7 +57,7 @@ public class ElasticsearchTestClient {
 	}
 	
 	private static RestClient buildRestClient() {
-		var host = new HttpHost("host.docker.internal", ELASTICSEARCH_CONTAINER.getMappedPort(PORT), SCHEME);
+		var host = new HttpHost("localhost", ELASTICSEARCH_CONTAINER.getMappedPort(PORT), SCHEME);
 		var credentialsProvider = buildCredentialsProvider();
 		var builder = RestClient.builder(host);
 

pom.xml

@@ -30,7 +30,7 @@
 	<parent>
 		<groupId>de.ozgcloud.common</groupId>
 		<artifactId>ozgcloud-common-parent</artifactId>
-		<version>4.6.0</version>
+		<version>4.7.0</version>
 	</parent>
 
 	<groupId>de.ozgcloud</groupId>
@@ -48,6 +48,10 @@
 	</modules>
 
 	<properties>
+		<java.version>17</java.version>
+		<maven.compiler.target>17</maven.compiler.target>
+		<maven.compiler.source>17</maven.compiler.source>
+
 		<operator-sdk.version>5.4.1</operator-sdk.version>
 
 		<!-- tools -->