Stop k8s created container at cluster stop

[cescoferraro]

As you can see, container created previously do not get killed.
A complete solution for this would consider #52 too

cesco@desktop: ~/code/go/src/github.com/wercker/wercker on master [+!?]
$ spread cluster start
Started localkube...
Setup and using kubectl `localkube` context.
cesco@desktop: ~/code/go/src/github.com/wercker/wercker on master [+!?]
$ docker ps
CONTAINER ID        IMAGE                            COMMAND                  CREATED             STATUS              PORTS                                 NAMES
ce75bd37fe36        weaveworks/weaveexec:1.4.5       "/home/weave/weavepro"   3 seconds ago       Up 2 seconds                                              weaveproxy
6a32ee850fc6        weaveworks/weave:1.4.5           "/home/weave/weaver -"   4 seconds ago       Up 3 seconds                                              weave
6c5e7427f229        redspreadapps/localkube:latest   "start.sh"               5 seconds ago       Up 4 seconds                                              localkube
17320df36681        f6284d9b5b83                     "./bindev runserver"     29 hours ago        Up 29 hours         0.0.0.0:9001->9000/tcp                iot_web_1
beae33ef02d3        cescoferraro/mongo:latest        "/run.sh"                2 days ago          Up 2 days           0.0.0.0:27017->27017/tcp, 28017/tcp   iot_mongo_1
1cd8045c9c8f        cescoferraro/redis:latest        "/entrypoint.sh /run."   2 days ago          Up 2 days           0.0.0.0:6379->6379/tcp                iot_redis_1
c8d6a3c35ceb        cescoferraro/postgres:latest     "/docker-entrypoint.s"   3 days ago          Up 2 days           0.0.0.0:5432->5432/tcp                iot_postgres_1
cesco@desktop: ~/code/go/src/github.com/wercker/wercker on master [+!?]
$ spread cluster stop
Stopping container `6c5e7427f229507c77df87a308a4c93273bf88755872855b7d740681e440b82d`...
cesco@desktop: ~/code/go/src/github.com/wercker/wercker on master [+!?]
$ docker ps
CONTAINER ID        IMAGE                                COMMAND                  CREATED             STATUS              PORTS                                 NAMES
9bad76cd1424        redspreadapps/mattermost-db:1        "/docker-entrypoint.s"   7 minutes ago       Up 7 minutes                                              k8s_postgres.23274139_mattermost-app-mgl9c_default_d7d9902e-f42d-11e5-88f1-00224d98d5c8_ba46c790
057236066e35        redspreadapps/mattermost-app:1       "/bin/sh -c /docker-e"   7 minutes ago       Up 7 minutes                                              k8s_app.ed693d73_mattermost-app-mgl9c_default_d7d9902e-f42d-11e5-88f1-00224d98d5c8_0723d600
257197b2a6c8        nginx                                "nginx -g 'daemon off"   7 minutes ago       Up 7 minutes                                              k8s_nginx.9179dbd3_nginx-2040093540-rkueb_default_e8a1d904-f42e-11e5-88f1-00224d98d5c8_993ad135
90065e9e6e8a        gcr.io/google_containers/pause:2.0   "/w/w /pause"            7 minutes ago       Up 7 minutes                                              k8s_POD.cf58006d_mattermost-app-mgl9c_default_d7d9902e-f42d-11e5-88f1-00224d98d5c8_4312a2f0
9aabff37ea5b        gcr.io/google_containers/pause:2.0   "/w/w /pause"            7 minutes ago       Up 7 minutes                                              k8s_POD.6059dfa2_nginx-2040093540-rkueb_default_e8a1d904-f42e-11e5-88f1-00224d98d5c8_507bbf0e
ce75bd37fe36        weaveworks/weaveexec:1.4.5           "/home/weave/weavepro"   8 minutes ago       Up 8 minutes                                              weaveproxy
6a32ee850fc6        weaveworks/weave:1.4.5               "/home/weave/weaver -"   8 minutes ago       Up 8 minutes                                              weave
17320df36681        f6284d9b5b83                         "./bindev runserver"     30 hours ago        Up 30 hours         0.0.0.0:9001->9000/tcp                iot_web_1
beae33ef02d3        cescoferraro/mongo:latest            "/run.sh"                2 days ago          Up 2 days           0.0.0.0:27017->27017/tcp, 28017/tcp   iot_mongo_1
1cd8045c9c8f        cescoferraro/redis:latest            "/entrypoint.sh /run."   2 days ago          Up 2 days           0.0.0.0:6379->6379/tcp                iot_redis_1
c8d6a3c35ceb        cescoferraro/postgres:latest         "/docker-entrypoint.s"   3 days ago          Up 2 days           0.0.0.0:5432->5432/tcp                iot_postgres_1

[mfburnett]

Hey @cescoferraro, thanks for putting in this issue. @ethernetdan will let you know if he needs any additional information from you and will let you know when he starts working on this.