Made mvn test work on JDK 1.8

Author: Stanley Shyiko

pom.xml

@@ -273,7 +273,7 @@
                     <plugin>
                         <groupId>org.jacoco</groupId>
                         <artifactId>jacoco-maven-plugin</artifactId>
-                        <version>0.6.3.201306030806</version>
+                        <version>0.7.9</version>
                         <configuration>
                             <destFile>${basedir}/target/coverage-reports/jacoco-unit.exec</destFile>
                             <dataFile>${basedir}/target/coverage-reports/jacoco-unit.exec</dataFile>