Make "cli info" show current stage information

[ddeflyer]

This is in relation to cosbench issue #227
Basically this just adds a little extra information.

Tested by loading rebuilt cosbench-controller-web_0.4.1.0.jar file onto a 0.4.1.0 install. Previously the result of running the command was (using curl instead of cli command but has the same effect):

[root@super1.harah /opt/cosbench-testing]$ curl "http://127.0.0.1:19088/controller/cli/index.action"
Drivers:
super1  http://192.168.253.164:18088/driver
super2  http://192.168.253.165:18088/driver
super3  http://192.168.253.166:18088/driver
super4  http://192.168.253.167:18088/driver
Total: 4 drivers

Active Workloads:
w9  Thu Jan 08 19:26:50 UTC 2015    PROCESSING
Total: 1 active workloads
[root@super1.harah /opt/cosbench-testing]$

Now the result is:

root@super1.harah /opt/cosbench-testing]$ ./cli.sh info
Drivers:
super1  http://192.168.253.164:18088/driver
super2  http://192.168.253.165:18088/driver
super3  http://192.168.253.166:18088/driver
super4  http://192.168.253.167:18088/driver
Total: 4 drivers

Active Workloads:
w10 Thu Jan 08 20:01:17 UTC 2015    PROCESSING  s2-prepare
Total: 1 active workloads

[root@super1.harah /opt/cosbench-testing]$ ./cli.sh info
Drivers:
super1  http://192.168.253.164:18088/driver
super2  http://192.168.253.165:18088/driver
super3  http://192.168.253.166:18088/driver
super4  http://192.168.253.167:18088/driver
Total: 4 drivers

Active Workloads:
w10 Thu Jan 08 20:01:17 UTC 2015    PROCESSING  s2-prepare
w11 Thu Jan 08 20:01:36 UTC 2015    QUEUING None
Total: 2 active workloads

[root@super1.harah /opt/cosbench-testing]$ 

notice the addition of "s3-main" to the job information.