Add container compute stats support.

Signed-off-by: Lantao Liu <lantaol@google.com>

vendor/github.com/Microsoft/hcsshim/internal/schema2/properties.go

@@ -9,6 +9,10 @@
 
 package hcsschema
 
+import (
+	v1 "github.com/containerd/cgroups/stats/v1"
+)
+
 type Properties struct {
 	Id string `json:"Id,omitempty"`
 
@@ -43,4 +47,8 @@ type Properties struct {
 	SharedMemoryRegionInfo []SharedMemoryRegionInfo `json:"SharedMemoryRegionInfo,omitempty"`
 
 	GuestConnectionInfo *GuestConnectionInfo `json:"GuestConnectionInfo,omitempty"`
+
+	// Metrics is not part of the API for HCS but this is used for LCOW v2 to
+	// return the full cgroup metrics from the guest.
+	Metrics *v1.Metrics `json:"LCOWMetrics,omitempty"`
 }