Description of problem:
rebalance status output shows run time in sec which is hard to read when no. is big

e.g

[root@7-VM1 core]#  gluster volume rebalance flat status
                                    Node Rebalanced-files          size       scanned      failures       skipped         status run time in secs
                               ---------      -----------   -----------   -----------   -----------   -----------   ------------   --------------
                               localhost           832000        13.7GB       5344344             1           228         failed        159836.00
                            10.70.36.133          1009405        15.7GB       5362837             2           206         failed        159836.00
                            10.70.36.132           823206        12.9GB       5416604             1           233         failed        159836.00
                            10.70.36.131                0        0Bytes       5227829             0             0         failed        159836.00
volume rebalance: flat: success: 

It's better to show output as '1 day, XX:XX:XX' or "Hour:min:sec" then '5227829'

Version-Release number of selected component (if applicable):
============================================
3.4.0.44rhs-1.el6rhs.x86_64




Actual results:
run time is always displayed in sec.

Expected results:
Hour:min:Sec format is better than only seconds 

Additional info: