ui_tests: fix test_config::test_size_limits

Fix a regression caused by: https://pagure.io/freeipa/issue/7606

Signed-off-by: Armando Neto <abiagion@redhat.com>
Reviewed-By: Pavel Picka <ppicka@redhat.com>

ipatests/test_webui/test_config.py

@@ -145,8 +145,11 @@ class test_config(UI_driver):
                                    'Must be an integer')
 
         # test field with negative value
-        self.assert_field_negative(size_limit_s, '-10',
-                                   'Minimum value is -1')
+        self.assert_field_negative(
+            size_limit_s, '-10',
+            "invalid 'searchrecordslimit': must be at least 10",
+            dialog=True,
+        )
 
         # test field with space
         self.assert_field_negative(size_limit_s, ' 11',