Add `ContainerManager` annotation to created containers

This change adds the following annotation to every container created by
podman:

```json
"Annotations": {
    "io.containers.manager": "libpod"
}
```

Target of this annotaions is to indicate which project in the containers
ecosystem is the major manager of a container when applications share
the same storage paths. This way projects can decide if they want to
manipulate the container or not. For example, since CRI-O and podman are
not using the same container library (libpod), CRI-O can skip podman
containers and provide the end user more useful information.

A corresponding end-to-end test has been adapted as well.

Relates to: https://github.com/cri-o/cri-o/pull/2761

Signed-off-by: Sascha Grunert <sgrunert@suse.com>

0 files changed, 0 insertions, 0 deletions