ChoreService shutdown message could be more informative

2015-04-23 18:34:38,163 INFO  [M:0;localhost:43244] hbase.ChoreService: Chore service for: localhost,43244,1429833734975 had [java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@420579b4, java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@75793a48, java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@69e18938, java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@55f7f1d6, java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@92644b2, java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@2f6806cf, java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@56971859, java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@59bfa778] on shutdown