THRIFT-3725 Skip a flaky cross test entry (d-dart compact framed-ip)

This closes #935
diff --git a/test/known_failures_Linux.json b/test/known_failures_Linux.json
index bdc4084..6712081 100644
--- a/test/known_failures_Linux.json
+++ b/test/known_failures_Linux.json
@@ -115,6 +115,7 @@
   "d-d_json_http-ip-ssl",
   "d-dart_binary_framed-ip",
   "d-dart_binary_http-ip",
+  "d-dart_compact_framed-ip",
   "d-dart_compact_http-ip",
   "d-dart_json_framed-ip",
   "d-dart_json_http-ip",