Add jacoco instrumentation for code coverage reports

See http://mickaelistria.wordpress.com/2012/10/08/sonar-at-eclipse-org/

Change-Id: Idd7df8125e0792e9bba924eadbc1320230cfa624
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

pom.xml

@@ -187,6 +187,11 @@
     <jetty-version>7.6.14.v20131031</jetty-version>
     <clirr-version>2.4</clirr-version>
     <httpclient-version>4.1.3</httpclient-version>
+
+    <!-- Properties to enable jacoco code coverage analysis -->
+    <sonar.core.codeCoveragePlugin>jacoco</sonar.core.codeCoveragePlugin>
+    <sonar.dynamicAnalysis>reuseReports</sonar.dynamicAnalysis>
+    <sonar.jacoco.reportPath>../target/jacoco.exec</sonar.jacoco.reportPath>
   </properties>
 
   <repositories>
@@ -341,6 +346,11 @@
           <artifactId>tycho-pack200b-plugin</artifactId>
           <version>0.18.0</version>
         </plugin>
+        <plugin>
+          <groupId>org.jacoco</groupId>
+          <artifactId>jacoco-maven-plugin</artifactId>
+          <version>0.7.0.201403182114</version>
+        </plugin>
       </plugins>
     </pluginManagement>
 
@@ -424,6 +434,27 @@
           </execution>
         </executions>
       </plugin>
+      <plugin>
+        <groupId>org.jacoco</groupId>
+        <artifactId>jacoco-maven-plugin</artifactId>
+        <executions>
+          <execution>
+            <goals>
+              <goal>prepare-agent</goal>
+            </goals>
+            <configuration>
+              <destFile>${sonar.jacoco.reportPath}</destFile>
+              <includes>
+                <include>org.eclipse.jgit.*</include>
+              </includes>
+              <excludes>
+                <exclude>**/*Test*.*</exclude>
+              </excludes>
+              <append>true</append>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
     </plugins>
   </build>