(doc) update plugins to improve javadoc/site generation
diff --git a/pom.xml b/pom.xml
index 139bea5..0bffa4a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
     <artifactId>maven-plugins</artifactId>
     <groupId>org.apache.maven.plugins</groupId>
     <version>34</version>
-    <relativePath>../../pom/maven/maven-plugins/pom.xml</relativePath>
+    <relativePath/>
   </parent>
 
   <artifactId>maven-artifact-plugin</artifactId>
@@ -175,6 +175,15 @@
             <keysMapLocation>${project.basedir}/pgp-keys-map.list</keysMapLocation>
           </configuration>                        
         </plugin>
+        <plugin>
+          <artifactId>maven-javadoc-plugin</artifactId>
+          <version>3.2.0</version>
+        </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-project-info-reports-plugin</artifactId>
+          <version>3.1.2</version>
+        </plugin>
       </plugins>
     </pluginManagement>
   </build>