Unknown option Verbose

```
sqoop:000> show option
Verbose = false
Poll-timeout = 10000
sqoop:000> set option --name Verbose --value true
Unknown option Verbose. Ignoring...
sqoop:000> show version
client version:
  Sqoop 1.99.4-cdh5.3.0 source revision 75a4ffb64ddc4001a26a04366271b51b262224a1
  Compiled by jenkins on Tue Dec 16 20:14:23 PST 2014
```
