Add extra logging to the GATK run report at the start of metrics aggregation.

git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@4529 348d0f76-0448-11de-a6fe-93d51630548a

java/src/org/broadinstitute/sting/gatk/phonehome/GATKRunReport.java

@@ -172,6 +172,8 @@ public class GATKRunReport {
         if ( type == PhoneHomeOption.NO_ET )
             throw new ReviewedStingException("Trying to create a run report when type is NO_ET!");
 
+        logger.info("Aggregating data for run report");
+
         mGATKHeader = CommandLineGATK.createApplicationHeader();
         currentPath = System.getProperty("user.dir");