test: Add 961-default-iface-resolution-gen to known failures for ASAN

Test is flaky with dex2oat watchdog timeout, it fails art-asan test
target quite often.

Change-Id: I3e3ab29d012f97fe7b1a743ec02b4c393f563911
diff --git a/test/knownfailures.json b/test/knownfailures.json
index 5a67fbc..bd9591a 100644
--- a/test/knownfailures.json
+++ b/test/knownfailures.json
@@ -711,5 +711,10 @@
         "variant": "no-image | no-dex2oat | no-prebuild",
         "description": ["Tests <clinit> for app images, which --no-image, --no-prebuild and",
                         "--no-dex2oat do not create"]
+    },
+    {
+        "tests": "961-default-iface-resolution-gen",
+        "env_vars": {"SANITIZE_HOST": "address"},
+        "description": ["Test hits dex2oat watchdog timeout (60sec) on art-asan"]
     }
 ]