Unifie container actions between all COEs

Magnum client has several actions (create/delete/exec/logs/pause/reboot/start/stop/unpause) for containers, but they works only for Docker Swarm. Goal of this blueprint is find common actions between all COEs and implement them for each COE (COE specific actions will be dropped from magnum client and user has to use native client for that)

Actions:
- create
 - Swarm: native
 - Mesos/Marathon: !!! no full support, create will start immediately https://mesosphere.github.io/marathon/docs/rest-api.html#post-v2-apps
 - Kub: !!! no full support, create will start immediately http://kubernetes.io/v1.0/docs/user-guide/kubectl/kubectl_create.html
- delete
 - Swarm: native
 - Mesos/Marathon: https://mesosphere.github.io/marathon/docs/rest-api.html#delete-v2-apps-appid
 - Kub: http://kubernetes.io/v1.0/docs/user-guide/kubectl/kubectl_delete.html
- exec
 - Swarm: native
 - Mesos/Marathon: !!! doesn't support
 - Kub: http://kubernetes.io/v1.0/docs/user-guide/kubectl/kubectl_exec.html
- logs
 - Swarm: native
 - Mesos/Marathon: !!! no full support, but can get some details through https://mesosphere.github.io/marathon/docs/rest-api.html#get-v2-apps-appid-versions-version
 - Kub: http://kubernetes.io/v1.0/docs/user-guide/kubectl/kubectl_logs.html
- pause
 - Swarm: native
 - Mesos/Marathon: !!! doesn't support
 - Kub: !!! doesn't support
- reboot
 - Swarm: native
 - Mesos/Marathon: https://mesosphere.github.io/marathon/docs/rest-api.html#post-v2-apps-appid-restart
 - Kub: !!! doesn't support
- start
 - Swarm: native
 - Mesos/Marathon: https://mesosphere.github.io/marathon/docs/rest-api.html#post-v2-apps
 - Kub: http://kubernetes.io/v1.0/docs/user-guide/kubectl/kubectl_create.html
- stop
 - Swarm: native
 - Mesos/Marathon: !! no full support, it will delete after stop https://mesosphere.github.io/marathon/docs/rest-api.html#post-v2-apps-appid-restart
 - Kub: !!! no full support, it will delete after stop http://kubernetes.io/v1.0/docs/user-guide/kubectl/kubectl_stop.html
- unpause
 - Swarm: native
 - Mesos/Marathon: !!! doesn't support
 - Kub: !!! doesn't support

Because Kub require POD for any containers, lets put all our containers in default pod (similar to http://blog.kubernetes.io/2015/10/some-things-you-didnt-know-about-kubectl_28.html)

So we can implement following actions for all COEs
- container-start
- container-delete
- container-logs

We can drop all other actions or through unsupported error.