Add basic bandwidth monitoring for replication. (#10501)

This change tracks bandwidth for a bucket and object

- [x] Add Admin API
- [x] Add Peer API
- [x] Add BW throttling
- [x] Admin APIs to set replication limit
- [x] Admin APIs for fetch bandwidth

cmd/server-main.go

@@ -32,6 +32,7 @@ import (
 	xhttp "github.com/minio/minio/cmd/http"
 	"github.com/minio/minio/cmd/logger"
 	"github.com/minio/minio/pkg/auth"
+	"github.com/minio/minio/pkg/bucket/bandwidth"
 	"github.com/minio/minio/pkg/certs"
 	"github.com/minio/minio/pkg/color"
 	"github.com/minio/minio/pkg/env"
@@ -158,6 +159,9 @@ func newAllSubsystems() {
 	// Create new bucket metadata system.
 	globalBucketMetadataSys = NewBucketMetadataSys()
 
+	// Create the bucket bandwidth monitor
+	globalBucketMonitor = bandwidth.NewMonitor(GlobalServiceDoneCh)
+
 	// Create a new config system.
 	globalConfigSys = NewConfigSys()