[JAVA-28928] Upgrade mesos-marathon to spring boot 3 (#16049)

mesos-marathon/Dockerfile

@@ -1,4 +1,4 @@
-FROM openjdk:8-jre-alpine
+FROM openjdk:17-jdk-alpine
 ADD target/mesos-marathon-0.0.1-SNAPSHOT.jar app.jar
 EXPOSE 8082
 ENTRYPOINT ["java","-jar","/app.jar"]

mesos-marathon/pom.xml

@@ -8,9 +8,9 @@
 
     <parent>
         <groupId>com.baeldung</groupId>
-        <artifactId>parent-boot-2</artifactId>
+        <artifactId>parent-boot-3</artifactId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../parent-boot-2</relativePath>
+        <relativePath>../parent-boot-3</relativePath>
     </parent>
 
     <dependencies>

mesos-marathon/src/test/java/com/baeldung/DemoApplicationIntegrationTest.java

@@ -4,7 +4,7 @@ import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.boot.web.server.LocalServerPort;
+import org.springframework.boot.test.web.server.LocalServerPort;
 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 import org.springframework.web.client.RestTemplate;