SEC-1237-Re-enabled maven source plugin

pom.xml

@@ -350,7 +350,6 @@
                     </execution>
                 </executions>
             </plugin>
-<!--            
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-source-plugin</artifactId>
@@ -360,13 +359,14 @@
                 </configuration>
                 <executions>
                     <execution>
+                        <id>attach-sources</id>
+                        <phase>verify</phase>                        
                         <goals>
                             <goal>jar</goal>
                         </goals>
                     </execution>
                 </executions>
-            </plugin>
--->            
+            </plugin>       
             <!-- Other -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>