Attempt at fixing submodule with Maven

Author: oschwald

pom.xml

@@ -98,6 +98,23 @@
           <maxmem>256m</maxmem>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>exec-maven-plugin</artifactId>
+        <version>1.1</version>
+        <executions>
+         <execution>
+            <phase>initialize</phase>
+            <id>invoke build</id>
+            <goals>
+              <goal>exec</goal>
+            </goals>
+          </execution>
+        </executions>
+        <configuration>
+          <executable>git submodule update --init --recursive</executable>
+        </configuration>
+      </plugin>
     </plugins>
   </build>
   <parent>