core: fix info log for discovered devices
core: fix info log for discovered devices

Fix the info log statement to log the discovered devices as their string
representation instead of pointers.
This changes the info log to only be the device names and the debug log
to be the whole disk struct as well.

Resolves #5625

Signed-off-by: Alexander Trost <88b6b84d9fa0dbf878e34ae3d402bc4895fcd37e@googlemail.com>

rook/nfs,rook/nfs,rook/rook,rook/nfs,rook/rook,rook/rook,rook/rook,rook/rook