[sohu] Skip test

Only available from China

youtube_dl/extractor/sohu.py

@@ -17,6 +17,7 @@ class SohuIE(InfoExtractor):
         u'info_dict': {
             u'title': u'MV：Far East Movement《The Illest》',
         },
+        u'skip': u'Only available from China',
     }
 
     def _real_extract(self, url):