print proper certinfo on console when starting up (#9479)

also potentially fix a race in certs.go implementation
while accessing tls.Certificate concurrently.

cmd/data-update-tracker.go

@@ -206,7 +206,7 @@ func (d *dataUpdateTracker) load(ctx context.Context, drives ...string) {
 			continue
 		}
 		err = d.deserialize(f, d.Saved)
-		if err != nil {
+		if err != nil && err != io.EOF {
 			logger.LogIf(ctx, err)
 		}
 		f.Close()