Fix the crawling of Yahoo Finance option page to reflect a layout change...

... so we can get the ask and bid price again.

Can verify the fix by executing the YQL query in the console: 
http://developer.yahoo.com/yql/console/ using the revised query

use "store://spHclBldle1Fcn1EWfxOZs" as yahoo.finance.oquote2; 
SELECT * FROM yahoo.finance.oquote2 WHERE symbol IN ("MSFT")

Compare that to the existing version: 
SELECT * FROM yahoo.finance.oquote WHERE symbol IN ("MSFT")

Note that the prod version is missing bid and ask prices in the returned results.