Adding hostboot commit hash to the release notes

Change-Id: Ide5991eb3a4ae85be61ce39db2898fb36bc540b7
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/41444
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Reviewed-by: Corey V. Swenson <cswenson@us.ibm.com>
Reviewed-by: Prachi Gupta <pragupta@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

src/build/tools/hbRelease

@@ -2567,6 +2567,9 @@ sub bq_add_releaseList
             $changenum = "%2D%2D%2D%2D%2D%2D%2D%2D%2D%20"; #---------
         }
         $note .= "$changenum$subject%20%20%0A";
+
+        # Adding in hb commit hash below the Commit number and subject
+        $note .= "%20%20%20%20%20%20%20%20%20%20$commit%0A";
     }
 
     # Login to BQ.