Needs approval from an approver in each of these files:
- ~~[OWNERS](https://github.com/yunify/hostnic-cni/blob/master/OWNERS)~~ [magicsong]
Approvers can indicate their approval by writing `/approve` in a comment
Approvers can cancel approval by writing `/approve cancel` in a comment
Also, we remove all flags of the agent so the agent is not a cmd runner but only a grpc server.
Users should be able to use hostnic without any configuration.