jacoco report generation is broken

[php-coder]

[INFO] --- jacoco-maven-plugin:0.8.5:report (default-cli) @ mystamps ---
[INFO] Skipping JaCoCo execution due to missing execution data file.

[php-coder]

This is regression after aa43861 (#1164) where argLine has been moved.

[php-coder]

Here is the proposed fix:

@@ -917,7 +917,7 @@
                                                and doesn't pass it into a forked process.
                                                See: https://stackoverflow.com/questions/17656475/maven-source-encoding-in-utf-8-not-working
                                        -->
-                                       <argLine>-Dfile.encoding=${project.build.sourceEncoding} -Xss256k</argLine>
+                                       <argLine>@{argLine} -Dfile.encoding=${project.build.sourceEncoding} -Xss256k</argLine>
                                </configuration>
                        </plugin>