lxd/storage/btrfs: Delete any orphaned *.ro snapshots See #5763 During a publish, a *.ro subvolume snapshot copy is made whilst the original snapshot is set read-write. If lxd is killed before publish finishes, the *.ro copy can be left orphaned, and should be deleted when the associated snapshot is deleted.
lxd/storage/btrfs: Delete any orphaned *.ro snapshots
See #5763
During a publish, a *.ro subvolume snapshot copy is made
whilst the original snapshot is set read-write.
If lxd is killed before publish finishes, the *.ro copy
can be left orphaned, and should be deleted when
the associated snapshot is deleted.

Signed-off-by: Joel Hockey <9ecfc52dc2ffef73afac73f3495f294aeddf1231@chromium.org>

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