Handle flaky windows test by rerunning

Author: BeyondEvil

testing/test_pytest_html.py

@@ -186,6 +186,7 @@ def test_fail(self, testdir):
         assert_results(html, passed=0, failed=1)
         assert "AssertionError" in html
 
+    @pytest.mark.flaky(reruns=2)  # test is flaky on windows
     def test_rerun(self, testdir):
         testdir.makeconftest(
             """