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

[Samir Akarioh]

@athos-ribeiro @cjdc

I added the check for the existence of chroot and also the -p for 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.