add test case for sitemap filter with alternate links
add test case for sitemap filter with alternate links

starrify/scrapy,eLRuLL/scrapy,dangra/scrapy,finfish/scrapy,elacuesta/scrapy,scrapy/scrapy,pawelmhm/scrapy,dangra/scrapy,pablohoffman/scrapy,eLRuLL/scrapy,elacuesta/scrapy,starrify/scrapy,pawelmhm/scrapy,pablohoffman/scrapy,elacuesta/scrapy,pablohoffman/scrapy,scrapy/scrapy,finfish/scrapy,wujuguang/scrapy,scrapy/scrapy,eLRuLL/scrapy,finfish/scrapy,dangra/scrapy,starrify/scrapy,pawelmhm/scrapy,wujuguang/scrapy,wujuguang/scrapy