Increase time for endurance test

Bug: Issue 6524
Change-Id: I9f58e31ec6dc8193878121fabed58d0d41636bbb
diff --git a/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-reviewer-updates-parser_test.html b/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-reviewer-updates-parser_test.html
index 3debf4b..fffd8a5 100644
--- a/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-reviewer-updates-parser_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-rest-api-interface/gr-reviewer-updates-parser_test.html
@@ -317,6 +317,6 @@
         reviewer_updates: _.times(200, makeRubbishUpdate),
       });
       instance._advanceUpdates();
-    }).timeout(1000);
+    }).timeout(2000);
   });
 </script>