nvme-print: update subsys verbose outputs

nvme-print: update subsys verbose outputs

The current list-subsys & show-topology simple outputs are a
little crowded. Also the respective verbose options to both
these commands are a no-op at the moment. So move the iopolicy
and subsystype details to the respective verbose outputs instead
so that the simple outputs are restricted to displaying key subsys
details like subsys name & NQN alone.

Signed-off-by: Martin George <marting@netapp.com>