Fixes flaky saucelabs tests which are timing out. The fix will allow for 2 more retrials when the browser script execution times out.
Fixes flaky saucelabs tests which are timing out. The fix will allow
for 2 more retrials when the browser script execution times out.

Change-Id: I16732aee4501cb1b64cb91eb7f18ff7b325e6a02

firebase/firebaseui-web,firebase/firebaseui-web,firebase/firebaseui-web,firebase/firebaseui-web