[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 8a3e36c48794053a8cbe440e1f8414e16dc161a5..c3b9f7ee471415d22825823ddbbf87ea871faf8d 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 try job for compile.
   compile_results = ndb.JsonProperty(default=[], indexed=False, compressed=True)
-  # TODO(chanli): Add test_results when add support for try jobs for test.
+
+  # A list of dict containing results and urls of each try job for test.
+  test_results = ndb.JsonProperty(default=[], indexed=False, compressed=True)
 
   # The status of the try job.
   status = ndb.IntegerProperty(