skip now failing tests (#4145)

Signed-off-by: Matteo Collina <[email protected]>

Author: mcollina

test/wpt/status/service-workers/cache-storage.status.json

@@ -22,7 +22,10 @@
       "fail": [
         "cors-exposed header should be stored correctly.",
         "Cache.match ignores vary headers on opaque response.",
-        "Cache.match blob should be sliceable"
+        "Cache.match blob should be sliceable",
+        "Cache.match with POST Request",
+        "Cache.match with a non-2xx Response",
+        "Cache.match with a network error Response"
       ],
       "flaky": [
         "Cache.match invoked multiple times for the same Request/Response"