Fix for missing adapter details.
Fix for missing adapter details.

```
~ # hpssacli ctrl all show config

Smart Array P840 in Slot 3                (sn: PDNNF0ARH9R22O)

CACHE STATUS PROBLEM DETECTED: The controller is disabled because the
cache
                               module is not attached. Please re-attach
                               the cache module to re-enable the controller.
```

jr0d/python-hpssa