Use SSD disk for journal device

Try to find out if device is SSD disk, and use it for journal device


https://github.com/crowbar/barclamp-deployer/pull/211 is required
Not sure if it is bug or feature, but when I have created disk with just 10G, this command will fail.
However, if I create the partition with sgdisk --new=0:0:0 (= use everything), than it works, and reports that the new partition has 10GiB....