Return not found for more recently deleted servers, too

ntpdb/server.go

@@ -0,0 +1,16 @@
+package ntpdb
+
+import "time"
+
+func (s *Server) DeletionAge(dur time.Duration) bool {
+	if !s.DeletionOn.Valid {
+		return false
+	}
+	if dur > 0 {
+		dur = dur * -1
+	}
+	if s.DeletionOn.Time.Before(time.Now().Add(dur)) {
+		return true
+	}
+	return false
+}