added logging statements

Former-commit-id: 399ad8e258b88b32eecf9082b62bc27c4387c64a

dependency-check-maven/src/main/java/org/owasp/dependencycheck/maven/ReportAggregationMojo.java

@@ -177,6 +177,7 @@ public abstract class ReportAggregationMojo extends AbstractMojo implements Mave
     protected void postExecute() throws MojoExecutionException, MojoFailureException {
         final File written = writeDataFile();
         if (written != null) {
+            LOGGER.fine(String.format("Data file written to %s", written.getAbsolutePath()));
             project.setContextValue(getDataFileContextKey(), written.getAbsolutePath());
         }
     }