Put back running including tests part

Author: JooHyukKim

pom.xml

@@ -188,6 +188,12 @@ alternative support for serializing POJOs as XML and deserializing XML as pojos.
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-surefire-plugin</artifactId>
           <version>${version.plugin.surefire}</version>
+          <configuration>
+            <includes>
+              <include>**/Test*.java</include>
+              <include>**/*Test.java</include>
+            </includes>
+          </configuration>
         </plugin>
       <!-- 20-Mar-2019, tatu: use Moditect for JDK9+ module info inclusion -->
       <plugin>