When user provision a storage node with dedicated storage add for
journal, it is designated to create journal partition on this dedicated
disk for every osd.
$ system host-stor-add storage-0 journal <disk uuid>
$ system host-stor-add storage-0 osd <disk uuid>
For above case, "ceph-disk prepare" request correct journal partition
for initialize and write header and keyring to journal disk.
Closes-Bug: 1830736
Change-Id: I70ae1a3bc049ad3842e0ec22851b148de5671781
Signed-off-by: Martin, Chen <haochuan.z.chen@intel.com>