Description of problem:
==========================
Currently Usage of rebalance command is : " Usage: volume rebalance <VOLNAME> [fix-layout] {start|stop|status} [force] "

1) "force" option can be only used with "start" . 

2) "fix-layout" option can be only used with "start" 

But the current usage says "fix-layout" operation can be stopped and can get the status of "fix-layout" operation and also "stop" ,"status" operation can be used with "force" option which is not correct. 

Version-Release number of selected component (if applicable):
===============================================================
glusterfs 3.4.0.59rhs built on Feb  4 2014 08:44:13


Steps to Reproduce:
=========================
1. root@rhs-client12 [Feb-07-2014- 5:06:46] >gluster v rebalance exporter stop force
Usage: volume rebalance <VOLNAME> [fix-layout] {start|stop|status} [force]

2. root@rhs-client12 [Feb-07-2014- 5:07:37] >gluster v rebalance exporter status force
Usage: volume rebalance <VOLNAME> [fix-layout] {start|stop|status} [force]

3. root@rhs-client11 [Feb-07-2014- 5:21:41] >gluster v rebalance exporter fix-layout status
Usage: volume rebalance <VOLNAME> [fix-layout] {start|stop|status} [force]
root@rhs-client11 [Feb-07-2014- 5:21:44] >

4. root@rhs-client11 [Feb-07-2014- 5:21:52] >gluster v rebalance exporter fix-layout stop
Usage: volume rebalance <VOLNAME> [fix-layout] {start|stop|status} [force]
root@rhs-client11 [Feb-07-2014- 5:22:07] >