Comments, docstrings and live test names cited item IDs of a roadmap
that is not part of the repository. They now say what is meant, or
nothing where the sentence stands without them. Test assertions and
behavior are unchanged.
The sync deleted the Instance of every VM missing from its compute, and
its owners and rights went with it. A VM moved with virsh, or undefined
and defined again, came back with no owner.
Now, when a VM disappears from a compute:
- if the same UUID is recorded on another compute, it moved: its owners
and template flag go there;
- otherwise they are kept in an InstanceTombstone and restored when the
UUID appears again within INSTANCE_OWNERSHIP_RETENTION_DAYS (30).
A UUID recorded on two computes at the same time is a copy and gets no
owners. VMs deleted through WebVirtCloud leave no tombstone.
