1. What is the problem
After patch 416771 is merged, we change to use registered tricircle
command to start our api and xjob instead of python script, this
introduces a problem that eventlet.monkey_patch is not correctly
executed so xjob fails to handle RPC request.
2. What is the solution to the problem
Directly execute eventlet.monkey_patch in cmd/xjob.py without
checking if it's imported as a module or run by python script.
3. What the features need to be implemented to the Tricircle
No new features