fix time comparison, refs #20687

tests/test_backup.py

@@ -24,7 +24,7 @@ def test_last_backup_is_recent(server, client):
     if status == 0:
         date = out.strip().split(' ')[-2]
         pdate = datetime.strptime(date, '%Y-%m-%d')
-        if datetime.now() - pdate > 2:
+        if (datetime.now() - pdate).days > 2:
             print('Backup is older than 2 days')
             return False
         else: