*: introduce wrapper pkgs for blockio and rdt

Before this patch, both the RdtEnabled and BlockIOEnabled are provided
by services/tasks pkg. Since the services/tasks can be pkg plugin which
can be initialized multiple times or concurrently. It will fire data-race
issue as there is no mutex to protect `enable`.

This patch is aimed to provide wrapper pkgs to use intel/{blockio,rdt}
safely.

Signed-off-by: Wei Fu <fuweid89@gmail.com>

services/tasks/local.go

@@ -39,6 +39,8 @@ import (
 	"github.com/containerd/containerd/log"
 	"github.com/containerd/containerd/metadata"
 	"github.com/containerd/containerd/mount"
+	"github.com/containerd/containerd/pkg/blockio"
+	"github.com/containerd/containerd/pkg/rdt"
 	"github.com/containerd/containerd/pkg/timeout"
 	"github.com/containerd/containerd/plugin"
 	"github.com/containerd/containerd/protobuf"
@@ -141,10 +143,10 @@ func initFunc(ic *plugin.InitContext) (interface{}, error) {
 		l.monitor.Monitor(t, nil)
 	}
 
-	if err := initBlockIO(config.BlockIOConfigFile); err != nil {
+	if err := blockio.SetConfig(config.BlockIOConfigFile); err != nil {
 		log.G(ic.Context).WithError(err).Errorf("blockio initialization failed")
 	}
-	if err := initRdt(config.RdtConfigFile); err != nil {
+	if err := rdt.SetConfig(config.RdtConfigFile); err != nil {
 		log.G(ic.Context).WithError(err).Errorf("RDT initialization failed")
 	}