Follow codecov.io instructions for jacoco

Author: psiniemi

pom.xml

@@ -148,9 +148,14 @@
             <version>0.8.5</version>
             <executions>
                 <execution>
-                    <id>default-prepare-agent</id>
                     <goals>
                         <goal>prepare-agent</goal>
+                    </goals>
+                </execution>
+                <execution>
+                    <id>report</id>
+                    <phase>test</phase>
+                    <goals>
                         <goal>report</goal>
                     </goals>
                 </execution>