[rule34] small unit test fixes

gallery_dl/extractor/rule34.py

@@ -32,7 +32,7 @@ class Rule34TagExtractor(booru.TagMixin, Rule34Extractor):
                r"\?page=post&s=list&tags=(?P<tags>[^&#]+)"]
     test = [("https://rule34.xxx/index.php?page=post&s=list&tags=danraku", {
         "content": "a01768c6f86f32eb7ebbdeb87c30b0d9968d7f97",
-        "pattern": r"https?://(.?img\.)?rule34\.xxx/images/\d+/[0-9a-f]+\.jpg",
+        "pattern": r"https?://([^.]+\.)?rule34\.xxx/images/\d+/[0-9a-f]+\.jpg",
         "count": 2,
     })]
 

test/test_results.py

@@ -23,7 +23,6 @@ TRAVIS_SKIP = {
 
 # temporary issues, etc.
 BROKEN = {
-    "imagetwist",
     "subapics",
 }