Increase WebDriverWait wait time.

Author: rmarren1

test/IntegrationTests.py

@@ -26,7 +26,7 @@ def setUpClass(cls):
             options.binary_location = os.environ['DASH_TEST_CHROMEPATH']
 
         cls.driver = webdriver.Chrome(chrome_options=options)
-        cls.wait = WebDriverWait(cls.driver, 20)
+        cls.wait = WebDriverWait(cls.driver, 30)
         loader = percy.ResourceLoader(webdriver=cls.driver)
         cls.percy_runner = percy.Runner(loader=loader)
         cls.percy_runner.initialize_build()