It turns out the restart is _not_ a stop+start but keeps certain
resources open and is subject to some timeouts that may differ across
distributions' default settings.
[NO NEW TESTS NEEDED] as I have absolutely no idea how to reliably cause
the failure/flake/race.
Also ignore ENOENTS of the CID file when removing a container which has
been identified of actually fixing #17607.
Fixes: #17607
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
f131eaa74a