[gardening] Mark various RawDatagramSocket/ tests as flaky

Issue: https://github.com/dart-lang/co19/issues/170
Change-Id: Ib0a80d12fab5f968e26a28988ef8d6c0973b48d1
Reviewed-on: https://dart-review.googlesource.com/c/80800
Commit-Queue: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
diff --git a/tests/co19_2/co19_2-kernel.status b/tests/co19_2/co19_2-kernel.status
index 0223086..f257794 100644
--- a/tests/co19_2/co19_2-kernel.status
+++ b/tests/co19_2/co19_2-kernel.status
@@ -2,6 +2,9 @@
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 LibTest/io/RawDatagramSocket/any_A01_t02: Pass, Fail # Issue https://github.com/dart-lang/co19/issues/170
+LibTest/io/RawDatagramSocket/asBroadcastStream_A01_t02: Pass, Fail # Issue https://github.com/dart-lang/co19/issues/170
+LibTest/io/RawDatagramSocket/distinct_A01_t05: Pass, Fail # Issue https://github.com/dart-lang/co19/issues/170
+LibTest/io/RawDatagramSocket/timeout_A02_t01: Pass, Fail # Issue https://github.com/dart-lang/co19/issues/170
 
 [ $compiler == dartkp ]
 Language/Expressions/Instance_Creation/New/evaluation_t20: RuntimeError