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

pkg/iam/policy/constants.go

@@ -75,7 +75,7 @@ var AdminDiagnostics = Policy{
 			Actions: NewActionSet(ProfilingAdminAction,
 				TraceAdminAction, ConsoleLogAdminAction,
 				ServerInfoAdminAction, TopLocksAdminAction,
-				OBDInfoAdminAction),
+				OBDInfoAdminAction, BandwidthMonitorAction),
 			Resources: NewResourceSet(NewResource("*", "")),
 		},
 	},