Do not make directories by mistake.

Rational: I found I had created a series of OSD directories under "/dev/" when disks I thought existed did not exist.
Warning: This change will be noticed by end users and may effect deployment infrastructures.

Signed-off-by: Owen Synge <osynge@suse.com>
Merge pull request #2204 from osynge/wip-dont-mkdir-by-mistake2

Do not make directories by mistake.

Reviewed-by: Alfredo Deza <adeza@redhat.com>