From inside the toolbox, the ceph debug level can now be changed for all
ceph logging subsystems, for instance, level 1 will be:
```
kubectl -n rook-ceph exec deploy/rook-ceph-tools -- set-ceph-debug-level 1
```
To reset to default values just run:
```
kubectl -n rook-ceph exec deploy/rook-ceph-tools -- set-ceph-debug-level default
```
Signed-off-by: Sébastien Han <seb@redhat.com>