Milo: Add task expired as a failure status

milo/appengine/swarming/testdata/build-expired.swarm

Index: milo/appengine/swarming/testdata/build-expired.swarm
diff --git a/milo/appengine/swarming/testdata/build-expired.swarm b/milo/appengine/swarming/testdata/build-expired.swarm
new file mode 100644
index 0000000000000000000000000000000000000000..987ce4c2b2404789867a975a54987086ce322df1
--- /dev/null
+++ b/milo/appengine/swarming/testdata/build-expired.swarm
@@ -0,0 +1,32 @@
+{
+ "created_ts": "2016-08-09T19:28:41.977650",
+ "name": "buildbucket-luci.infra.try-Infra Win Tester",
+ "task_id": "308998ca182a0210",
+ "tags": [
+  "allow_milo:1",
+  "buildbucket_bucket:luci.infra.try",
+  "buildbucket_hostname:cr-buildbucket.appspot.com",
+  "buildbucket_template_canary:false",
+  "builder:Infra Win Tester",
+  "buildset:patch/rietveld/codereview.chromium.org/2225073005/1",
+  "cpu:x86-64",
+  "master:luci.infra.try",
+  "os:Windows-7-SP1",
+  "pool:Chrome",
+  "priority:100",
+  "recipe_name:infra_repo_trybot",
+  "recipe_repository:https://chromium.googlesource.com/infra/infra",
+  "recipe_revision:",
+  "user:",
+  "user_agent:cq"
+ ],
+ "internal_failure": false,
+ "abandoned_ts": "2016-08-09T20:29:03.997560",
+ "failure": false,
+ "state": "EXPIRED",
+ "modified_ts": "2016-08-09T20:29:03.997560",
+ "user": "",
+ "kind": "swarming#taskItem",
+ "etag": "\"RwulR2ZW4lMmerK_ArGKE3V5R-w/ZT62m1grWq3fx6aAhoOVJjYMJDE\""
+}
+