Podman v5 will not support cgroups-v1. This commit will print a warning
if it detects a cgroups-v1 system. The warning can be hidden by setting
envvar `PODMAN_CGROUPSV1_WARNING`.
This warning is patched out for RHEL 9 builds as cgroups-v1 will still
be supported on RHEL 9 systems.
Resolves: https://issues.redhat.com/browse/RUN-1957
[NO NEW TESTS NEEDED]
Co-authored-by: Ed Santiago <santiago@redhat.com>
Co-authored-by: Sascha Grunert <sgrunert@redhat.com>
Co-authored-by: Giuseppe Scrivano <gscrivan@redhat.com>
Signed-off-by: Lokesh Mandvekar <lsm5@redhat.com>
01a8539ef0