[Findit] Modify tryjob pipelines to trigger try jobs for test failure.

appengine/findit/model/wf_try_job.py

Index: appengine/findit/model/wf_try_job.py
diff --git a/appengine/findit/model/wf_try_job.py b/appengine/findit/model/wf_try_job.py
index 7e82824eb014dc2153172d8e306bd6ea7f106e97..91ea13cc780a7b43f327e03b50bd34fff1d64c63 100644
--- a/appengine/findit/model/wf_try_job.py
+++ b/appengine/findit/model/wf_try_job.py
@@ -15,7 +15,9 @@ class WfTryJob(BaseBuildModel):
   """
   # A list of dict containing results and urls of each tryjob for compile.
   compile_results = ndb.JsonProperty(default=[], indexed=False, compressed=True)
-  # TODO(chanli): Add test_results when add support for tryjobs for test.
+
+  # A dict 
+  test_results = ndb.JsonProperty(default=[], indexed=False, compressed=True)
 
   # The status of the try job.
   status = ndb.IntegerProperty(