[Merge] ~samirakarioh/livecd-rootfs:add-metadata-rocks into livecd-rootfs:ubuntu/master

[Samir Akarioh]

> Hi Samir,
> 
> I added a few comments inline here.

Hi i update the commit thanks to your remarks, i thinks it's good to not have the -p option for the mkdir
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https://code.launchpad.net/~samirakarioh/livecd-rootfs/+git/livecd-rootfs/+merge/430736
Your team Ubuntu Core Development Team is requested to review the proposed merge of ~samirakarioh/livecd-rootfs:add-metadata-rocks into livecd-rootfs:ubuntu/master.