Revisit hyper client and api

[feiskyer]

The hyper client code should be separated from hyper CLI. And we should also add an optional gRPC api to improve performance.

• [x] Separate client code and api code #263
• [x] Prepare types for both current api and gRPC #279
  • proto definition
  • generate types.go
  • fix usage
  • verify in CI
• [ ] Clean up client/api/ code, move CLI related function to CLI itself
• [ ] Add ApiVersion to hyperd
• [ ] Make api more restful and return json object for all APIs
  • This will change API, consider related projects
• [ ] Add optional gRPC api #296
  • [x] POST, /vm/create #315
  • [x] DELETE, /vm #315
  • [x] GET, /pod/info #296
  • [x] GET, /pod/stats
  • [x] GET, /list #302
  • [x] POST, /pod/create #318
  • [x] POST, /pod/labels
  • [x] POST, /pod/start #345
  • [x] POST, /pod/stop
  • [x] POST, /pod/kill
  • [x] POST, /pod/pause
  • [x] POST, /pod/unpause
  • [x] DELETE, /pod #318
  • [x] GET, /container/info #302
  • [x] GET, /container/logs #324
  • [x] POST, /container/create #335
  • [x] POST, /container/start
  • [x] POST, /container/stop
  • [x] DELETE, /container
  • [ ] POST, /container/rename
  • [ ] POST, /container/commit
  • [x] POST, /container/kill
  • [x] POST, /exec
  • [x] GET, /exitcode #339
  • [x] POST, /attach #344
  • [x] POST, /tty/resize ( will be replaced by /container/$id/tty and /exec/$id/tty in near future)
  • [x] GET, /service/list
  • [x] POST, /service/add
  • [x] POST, /service/update
  • [x] DELETE, /service
  • [x] GET, /images/get #302
  • [x] POST, /image/create
  • [ ] POST, /image/load
  • [x] POST, /image/push
  • [ ] POST, /image/build
  • [x] DELETE, /image
  • [ ] GET, /_ping
  • [x] GET, /info #342
  • [x] GET, /version
  • [ ] POST, /auth

[xlgao-zju]

I will take GET, /info for practice.

[resouer]

stats, labels will be sent after start

[heartlock]

I will take POST, /image/load POST, /auth POST, /image/build

[gnawux]

@feiskyer Do we still need this issue for 0.8 and later release?

[feiskyer]

There are still some interfaces missing, e.g. image build, container commit and so on. And current http api is still not respect of restful.