The following revision refers to this bug:
  https://chromium.googlesource.com/infra/infra.git/+/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1

commit 41875d7adbe20d8c9adeaaa7b47000cc8804d5d1
Author: chanli <chanli@chromium.org>
Date: Fri Aug 12 23:23:34 2016

[Findit] Refactor Findit pipeline.

1. Merge pipelines under the same root pipeline and remove some unused pipelines
2. For test try jobs, trigger swarming tasks earlier

Example try jobs after this refactor:
Compile:
https://chanli-dot-findit-for-me.appspot.com/waterfall/build-failure?url=https://build.chromium.org/p/chromium.memory/builders/Linux%20Chromium%20OS%20ASan%20LSan%20Builder/builds/26425

Test:
https://chanli-dot-findit-for-me.appspot.com/waterfall/build-failure?url=https://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20(1)/builds/54707

Design doc (Under development):
https://docs.google.com/a/google.com/document/d/1QzkpoJT_XrN0cwMXPYjDMXpJfNNYH7-rFFhSaCV7RjY/edit?usp=sharing

BUG= 632121 ,  627298 

Review-Url: https://codereview.chromium.org/2187763004

[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/model/test/wf_swarming_task_test.py
[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/model/wf_swarming_task.py
[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/analyze_build_failure_pipeline.py
[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/identify_try_job_culprit_pipeline.py
[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/monitor_try_job_pipeline.py
[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/process_swarming_task_result_pipeline.py
[delete] https://crrev.com/004cf1209f4147996ef78cc3249ed58ba6ea7d54/appengine/findit/waterfall/run_try_job_for_reliable_failure_pipeline.py
[add] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/schedule_compile_try_job_pipeline.py
[add] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/schedule_test_try_job_pipeline.py
[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/schedule_try_job_pipeline.py
[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/start_try_job_on_demand_pipeline.py
[delete] https://crrev.com/004cf1209f4147996ef78cc3249ed58ba6ea7d54/appengine/findit/waterfall/swarming_tasks_to_try_job_pipeline.py
[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/test/analyze_build_failure_pipeline_test.py
[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/test/identify_try_job_culprit_pipeline_test.py
[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/test/monitor_try_job_pipeline_test.py
[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/test/process_swarming_task_result_pipeline_test.py
[delete] https://crrev.com/004cf1209f4147996ef78cc3249ed58ba6ea7d54/appengine/findit/waterfall/test/run_try_job_for_reliable_failure_pipeline_test.py
[add] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/test/schedule_compile_try_job_pipeline_test.py
[add] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/test/schedule_test_try_job_pipeline_test.py
[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/test/schedule_try_job_pipeline_test.py
[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/test/start_try_job_on_demand_pipeline_test.py
[delete] https://crrev.com/004cf1209f4147996ef78cc3249ed58ba6ea7d54/appengine/findit/waterfall/test/swarming_tasks_to_try_job_pipeline_test.py
[delete] https://crrev.com/004cf1209f4147996ef78cc3249ed58ba6ea7d54/appengine/findit/waterfall/test/try_job_pipeline_test.py
[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/test/try_job_util_test.py
[delete] https://crrev.com/004cf1209f4147996ef78cc3249ed58ba6ea7d54/appengine/findit/waterfall/try_job_pipeline.py
[delete] https://crrev.com/004cf1209f4147996ef78cc3249ed58ba6ea7d54/appengine/findit/waterfall/try_job_type.py
[modify] https://crrev.com/41875d7adbe20d8c9adeaaa7b47000cc8804d5d1/appengine/findit/waterfall/try_job_util.py