ceph::osd::journal: prepare separate journal disks

Add support for separate journal disks, format the disk and
mount the disk on request. The disk gets formated and mounted
with the same options as the OSD disks.

Signed-off-by: Danny Al-Gaaf <d.al-gaaf@telekom.de>
example-site.pp: fix puppet-lint/Travis issues

Signed-off-by: Danny Al-Gaaf <d.al-gaaf@telekom.de>
ceph_key_spec.rb: fix rspec, add missing concat_basedir to facts

Signed-off-by: Danny Al-Gaaf <d.al-gaaf@telekom.de>
Merge pull request #6 from TelekomCloud/feature/handle-journal-disks

ceph::osd::journal: prepare separate journal disks