gwtop fails

> Traceback (most recent call last):
> File "/bin/gwtop", line 280, in
> device_map = get_device_info()
> File "/usr/lib/python2.7/site-packages/gwtop/config/local.py", line 49, in get_device_info
> return get_lio_devices()
> File "/usr/lib/python2.7/site-packages/gwtop/config/local.py", line 123, in get_lio_devices
> storage_type, pool_name, image_name = cfg_data.split('/')
> ValueError: too many values to unpack
>

Start by reproducing the traceback from /bin/gwtop and read gwtop/config/local.py, especially get_device_info() and get_lio_devices() around line 123. Trace the configuration value passed to cfg_data.split('/'); done means gwtop can load the device map without the ValueError for the reported configuration.

Written by the indexing model from the issue text.