[Merge] ~saviq/livecd-rootfs:add-buildd-aarch64 into livecd-rootfs:ubuntu/master

[Michał Sawicz]

The proposal to merge ~saviq/livecd-rootfs:add-buildd-aarch64 into livecd-rootfs:ubuntu/master has been updated.

Commit message changed to:

Add arm64 buildd bootable image to support Snapcraft on ARM64

For more details, see:
https://code.launchpad.net/~saviq/livecd-rootfs/+git/livecd-rootfs/+merge/417034
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Your team Ubuntu Core Development Team is requested to review the proposed merge of ~saviq/livecd-rootfs:add-buildd-aarch64 into livecd-rootfs:ubuntu/master.