devmapper: `docker info` devices hard coded

If `--storage-opt dm.datadev=/dev/loop0 --storage-opt
dm.metadatadev=/dev/loop1 ` were provided, the information was not
reflected in the information output.

Closes: #7137

Signed-off-by: Vincent Batts <vbatts@redhat.com>
devmapper: resizepool hardcodes files as well

Signed-off-by: Vincent Batts <vbatts@redhat.com>
Merge pull request #8172 from vbatts/vbatts-devmapper_fix_devicset_status_devices

devmapper: `docker info` devices hard coded