Milo: Add LogDog annotation stream support.

appengine/cmd/milo/swarming/expectations/build-hang.json

Index: appengine/cmd/milo/swarming/expectations/build-hang.json
diff --git a/appengine/cmd/milo/swarming/expectations/build-hang.json b/appengine/cmd/milo/swarming/expectations/build-hang.json
index b3900fb09b1517693ce2be21763c7b802428daaf..fa5f54ddd8f64bc8d86f6afa2ee369d1d53f870e 100644
--- a/appengine/cmd/milo/swarming/expectations/build-hang.json
+++ b/appengine/cmd/milo/swarming/expectations/build-hang.json
@@ -17,16 +17,23 @@
       "Alt": ""
     },
     "MainLink": null,
-    "SubLink": null,
+    "SubLink": [
+      {
+        "Label": "stdout",
+        "Img": "",
+        "URL": "foo/stdout",
+        "Alt": ""
+      }
+    ],
     "Progress": null,
     "Started": "2016-06-28T13:23:16.61592Z",
     "Finished": "2016-06-28T16:24:03.24387Z",
-    "Duration": 10807630000114,
+    "Duration": 10846627950000,
     "Type": "Recipe",
     "LevelsDeep": 0,
     "Text": [
       "Task timed out",
-      "InfraFailure bot_update"
+      "Running bot_update"

[Ryan Tseng, 2016/07/29 18:16:38]

This doesn't seem right (And status on L97)

[dnj, 2016/07/29 19:57:35]

Oh crap forgot to fix this, Done.

     ]
   },
   "SourceStamp": null,
@@ -87,7 +94,7 @@
     {
       "ParentLabel": null,
       "Label": "bot_update",
-      "Status": "InfraFailure",
+      "Status": "Running",
       "Banner": null,
       "Bot": null,
       "Source": null,
@@ -101,7 +108,7 @@
       "Progress": null,
       "Started": "2016-06-28T13:23:52.34Z",
       "Finished": "0001-01-01T00:00:00Z",
-      "Duration": 10810903870000,
+      "Duration": -9167032340000000,

[nodir, 2016/07/29 18:42:07]

this broke

       "Type": "Step",
       "LevelsDeep": 0,
       "Text": null
@@ -109,6 +116,22 @@
   ],
   "PropertyGroup": [
     {
+      "GroupName": "recipe bootstrap",
+      "Property": null
+    },
+    {
+      "GroupName": "setup_build",
+      "Property": null
+    },
+    {
+      "GroupName": "bot_update",
+      "Property": null
+    },
+    {
+      "GroupName": "Main",
+      "Property": null
+    },
+    {
       "GroupName": "Swarming",
       "Property": [
         {
@@ -125,22 +148,6 @@
           "Value": "1"
         }
       ]
-    },
-    {
-      "GroupName": "recipe bootstrap",
-      "Property": null
-    },
-    {
-      "GroupName": "setup_build",
-      "Property": null
-    },
-    {
-      "GroupName": "bot_update",
-      "Property": null
-    },
-    {
-      "GroupName": "Main",
-      "Property": null
     }
   ],
   "Blame": null