1. update NerveXJob to DIJob
2. update group version to diengine.sensetime.com
3. update project
name to di-orchestrator

1. add service informer
2. query service informer to generate urls for server http get requests

1. create aggregator by operator instead of server
2. improve code reuse rate
3. update crd

create a nervexjob, operator will create a mock coordinator for us, the coordinator will send a
request to nervex-server, the server will create 1 actor and 1 learner. after coordinator receive
actor/learner, it will wait for actor/learner to start and then shut down

1. implement nervex-server add function
2. move common function to util
3. add dockerfile for
server
4. rm useless config