Several updates (#2697)

* alibaba: add freshippo.com

* gamersky: add more ad domains

* jd-ads: add more ad domains

* samsung: add samsungads.com

* chinamobile: fix wrong classification for some domains

data/jd-ads

@@ -1,6 +1,8 @@
 ads.union.jd.com @ads
+ads-union.jd.com @ads
 c-nfa.jd.com @ads
 cps.360buy.com @ads
+gia.jd.com @ads
+img-x.jd.com @ads
 jzt.jd.com @ads
 stat.m.jd.com @ads
-img-x.jd.com @ads