VID-1787 - Add genres to page categories for Howdini videos

I'm not sure I understand the difference between this method and the addGenreToPageCategories method on line 28. They both seem to doing the same thing? Also, I don't know if we necessarily need to update the page categories on the Ooyala side. These videos will be updated on our end and, if we do need to reingest them down the line, mapping the genre to pagecatgories should be taken care by those changes you made to the OoyalaFeedIngester.