only create crgoup when not rootless if using cgroupfs

[NO NEW TESTS NEEDED] now that podman's cgroup config tries to initialize controllers, cgroupfs errors out on pod creation
we need to mimic the behavior that used to exist and only create the cgroup when running as rootful

Signed-off-by: Charlie Doern <cdoern@redhat.com>

libpod/runtime_pod_linux.go

@@ -78,6 +78,8 @@ func (r *Runtime) NewPod(ctx context.Context, p specgen.PodSpecGenerator, option
 					pod.state.CgroupPath = filepath.Join(pod.config.CgroupParent, pod.ID())
 					if p.InfraContainerSpec != nil {
 						p.InfraContainerSpec.CgroupParent = pod.state.CgroupPath
+						// cgroupfs + rootless = permission denied when creating the cgroup.
+						if !rootless.IsRootless() {
 							res, err := GetLimits(p.InfraContainerSpec.ResourceLimits)
 							if err != nil {
 								return nil, err
@@ -97,6 +99,7 @@ func (r *Runtime) NewPod(ctx context.Context, p specgen.PodSpecGenerator, option
 						}
 					}
 				}
+			}
 		case config.SystemdCgroupsManager:
 			if pod.config.CgroupParent == "" {
 				if rootless.IsRootless() {