Atempt to improve check_reset_password reliability

Although I cannot reproduce the failure from bidpom.stage:http://qa-selenium.mv.mozilla.com:8080/view/BIDPOM/job/bidpom.stage/697/testReport/tests.check_reset_password/TestResetPassword/test_reset_password/
 locally or on --host=qa-sel , I've modified the webdriver wait condition.