Fix #172 'mvn site' fails with cobertura-maven-plugin version 2.7

pom.xml

@@ -381,18 +381,18 @@
     </build>
     <reporting>
         <plugins>
-
-            <!--  integrate maven-cobertura-plugin to project site  -->
+            <!-- integrate maven-cobertura-plugin to project site -->
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>cobertura-maven-plugin</artifactId>
                 <version>${cobertura.version}</version>
-                <configuration>
-                    <formats>
-                        <format>html</format>
-                    </formats>
-                    <check/>
-                </configuration>
+                <reportSets>
+                    <reportSet>
+                        <reports>
+                            <report>cobertura</report>
+                        </reports>
+                    </reportSet>
+                </reportSets>
             </plugin>
         </plugins>
     </reporting>