Use /var/lib/ceph/osd folder to filter osd mount point
Use /var/lib/ceph/osd folder to filter osd mount point

In some case, use may mount a partition to /var/lib/ceph, and umount
it will be failure and no need to do so too.

Signed-off-by: Jeffrey Zhang <b85963bd7b7bde6f22347263e92cb006603c0858@gmail.com>
(cherry picked from commit 85cc61a6d9f23cc98a817ea988c8b50e6c55698f)

fgal/ceph-ansible,fgal/ceph-ansible