[JAVA-1265] Review build time

* Migrate UserMapperUnitTest to UserMapperIntegrationTest as it uses
Spring and takes a lot of time to execute

jhipster-5/bookstore-monolith/pom.xml

@@ -7,7 +7,7 @@
     <version>0.0.1-SNAPSHOT</version>
     <packaging>war</packaging>
     <name>Bookstore</name>
-    
+
     <parent>
         <artifactId>jhipster-5</artifactId>
         <groupId>com.baeldung.jhipster</groupId>
@@ -982,7 +982,7 @@
                                         <pluginExecution>
                                             <pluginExecutionFilter>
                                                 <groupId>com.github.eirslett</groupId>
-                                        <artifactId>frontend-maven-plugin</artifactId>
+                                                <artifactId>frontend-maven-plugin</artifactId>
                                                 <versionRange>${frontend-maven-plugin.version}</versionRange>
                                                 <goals>
                                                     <goal>install-node-and-npm</goal>

jhipster-5/bookstore-monolith/src/test/java/com/baeldung/jhipster5/service/mapper/UserMapperIntegrationTest.java

@@ -26,7 +26,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 @RunWith(SpringRunner.class)
 @SpringBootTest(classes = BookstoreApp.class)
-public class UserMapperUnitTest {
+public class UserMapperIntegrationTest {
 
     private static final String DEFAULT_LOGIN = "johndoe";