QDS SDK command groups and roles

QDS command for groups/roles
For some reason, the json is completely parsed. Look at the o/p below for create and compare with view. The policy object is not parsed:
```bash
    (va-qds)[ec2-user@centos64 va-qds]$ qds.py role create --name poweruser --policy '[{"access":"allow", "resource":"all"}]'
   {
        "roles": {
            "account_id": 14, 
            "created_at": "2014-09-03T09:31:21Z", 
            "id": 3, 
            "name": "poweruser", 
            "policy": "[{\"access\":\"allow\", \"resource\":\"all\"}]", 
            "source": "user-defined", 
            "updated_at": "2014-09-03T09:31:21Z"
        }
    }
    (va-qds)[ec2-user@centos64 va-qds]$ qds.py role view 3
    {
        "roles": {
            "account_id": 14, 
            "created_at": "2014-09-03T09:31:21Z", 
            "id": 3, 
            "name": "poweruser", 
            "policy": [
                {
                    "access": "allow", 
                    "resource": "all"
                }
            ], 
            "source": "user-defined", 
            "updated_at": "2014-09-03T09:31:21Z"
        }
    }
```