Since commit c25cc7230 ("Allow a value of -1 to set unlimited pids
limit") podman converts the pids-limit value of -1 to 0 for OCI spec.
Unfortunately, different runtimes (crun and runc) treat pids.limit=0
differently, and the runtime-spec definition is somewhat vague
(see [1]).
Long term fix belongs to runtime-spec and then runtimes should follow
it.
Short term fix is do not convert -1 to 0 (as all runtimes treat -1 as
unlimited).
[NO NEW TESTS NEEDED] -- this is covered by test added in commit 553e53d44.
Fixes: https://issues.redhat.com/browse/RHEL-80973
[1]: https://github.com/opencontainers/runc/issues/4014#issuecomment-1888185352
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
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