libcontainer/intelrdt: add support for EnableMonitoring field

The linux.intelRdt.enableMonitoring field enables the creation of
a per-container monitoring group. The monitoring group is removed when
the container is destroyed.

Signed-off-by: Markus Lehtonen <markus.lehtonen@intel.com>

features.go

@@ -56,8 +56,9 @@ var featuresCommand = cli.Command{
 					Enabled: &t,
 				},
 				IntelRdt: &features.IntelRdt{
-					Enabled:  &t,
-					Schemata: &t,
+					Enabled:    &t,
+					Schemata:   &t,
+					Monitoring: &t,
 				},
 				MountExtensions: &features.MountExtensions{
 					IDMap: &features.IDMap{