Version of test_product_link_urls_are_valid that doesn't use Selenium

gistfile1.py

    @pytest.mark.skip_selenium
    @pytest.mark.nondestructive
    def test_product_link_urls_are_valid(self, mozwebqa):
        mozillabased_page = MozillaBasedPage(mozwebqa)
        url = "%s/projects/mozilla-based/" % mozwebqa.base_url
        page_response = requests.get(url)
        html = BeautifulStoneSoup(page_response.content)
        bad_urls = []
        product_list = html.find('ul', 'productlist')
        product_links = product_list.findAll('a', href=True)
        for link in product_links:
            url = link['href']
            response_code = mozillabased_page.get_response_code(url)
            if response_code != requests.codes.ok:
                bad_urls.append('%s is not a valid url - status code: %s.' % (url, response_code))
        Assert.equal(0, len(bad_urls), '%s bad urls found: ' % len(bad_urls) + ', '.join(bad_urls))