Update grpc timeout and logger

Signed-off-by: Derek McGowan <derek@mcgstyle.net>

cmd/ctr/app/main.go

@@ -19,7 +19,6 @@ package app
 import (
 	"fmt"
 	"io/ioutil"
-	"log"
 
 	"github.com/containerd/containerd/cmd/ctr/commands/containers"
 	"github.com/containerd/containerd/cmd/ctr/commands/content"
@@ -44,7 +43,7 @@ var extraCmds = []cli.Command{}
 
 func init() {
 	// Discard grpc logs so that they don't mess with our stdio
-	grpclog.SetLogger(log.New(ioutil.Discard, "", log.LstdFlags))
+	grpclog.SetLoggerV2(grpclog.NewLoggerV2(ioutil.Discard, ioutil.Discard, ioutil.Discard))
 
 	cli.VersionPrinter = func(c *cli.Context) {
 		fmt.Println(c.App.Name, version.Package, c.App.Version)