Today we assume that if the CRI/upper layer doesn't provide a container
type annotation, it should be treated as a sandbox. Up to this point, a
sandbox with a pause container in CRI context and a single container
(ala ctr run) are treated the same.
For VM sizing and container constraining, it'll be useful to know if
this is a sandbox or if this is a single container.
In updating this, we cleanup the type handling tests and we update the
containerd annotations vendoring.
Fixes: #2926
Signed-off-by: Eric Ernst <eric_ernst@apple.com>
52f79aef91