MRF: Better detection of non stable disks (#12252)

MRF does not detect when a node is disconnected and reconnected quickly
this change will ensure that MRF is alerted by comparing the last disk
reconnection timestamp with the last MRF check time.

Signed-off-by: Anis Elleuch <anis@min.io>

Co-authored-by: Klaus Post <klauspost@gmail.com>

cmd/naughty-disk_test.go

@@ -21,6 +21,7 @@ import (
 	"context"
 	"io"
 	"sync"
+	"time"
 )
 
 // naughtyDisk wraps a POSIX disk and returns programmed errors
@@ -55,6 +56,10 @@ func (d *naughtyDisk) IsOnline() bool {
 	return d.disk.IsOnline()
 }
 
+func (d *naughtyDisk) LastConn() time.Time {
+	return d.disk.LastConn()
+}
+
 func (d *naughtyDisk) IsLocal() bool {
 	return d.disk.IsLocal()
 }