Bug 1473455

Description of problem:

The format of oadm manage-node --list-pods <node> -o yaml has changed in 3.6. As a result, -o go-template output format strings that worked in 3.5 and earlier are also broken in 3.6.

Evident in the actual results below is the following:

* most stuff has had the first letter in the field name capitalized
* all fields are listed even if they have a null value
* there is no metadata section, but the fields from the metadata section are now at the same level of the hierarchy where metadata should be


Version-Release number of selected component (if applicable): 3.6


How reproducible: 100%


Steps to Reproduce:
1. oc get node
2. Select a node from the output, and use it for the next command
3. oadm manage-node --list-pods <node> -o yaml

Actual results: (excerpt)

Items:
- Spec:
    ActiveDeadlineSeconds: null
    Affinity: null
    AutomountServiceAccountToken: null
    Containers:
    - Args: null
      Command: null
      Env: null
      EnvFrom: null
      Image: docker.io/deshuai/hello-pod:latest
      ImagePullPolicy: Always
      Lifecycle: null
      LivenessProbe: null
      Name: hello-pod
# ...
  creationTimestamp: 2017-07-20T19:20:55Z
  generateName: hello-statefulset-
  labels:
    app: hello-pod
  name: hello-statefulset-0
  namespace: "10475"
# ...


Expected results: (excerpt)

items:
- metadata:
    creationTimestamp: 2017-07-20T19:20:55Z
    generateName: hello-statefulset-
    labels:
      app: hello-pod
    name: hello-statefulset-0
    namespace: "10475"
# ...
  spec:
    containers:
    - image: docker.io/deshuai/hello-pod:latest
      imagePullPolicy: Always
      name: hello-pod
# ...


Additional info:

As mentioned above, because the field names have all changed, go-template and jsonpath are also affected. For example, here's my go-template command that I run from a node that works on 3.5 that is now broken:

node_name=$(grep -Po '(?<=^nodeName: ).*' /etc/origin/node/node-config.yaml )

oadm --config /etc/origin/node/system:node:${node_name}.kubeconfig \
    manage-node --list-pods $node_name \
    -o go-template='{{range $index, $pod := .items}}{{range .status.containerStatuses}}{{if not .state.terminated}}{{.containerID}} {{$pod.metadata.namespace}} {{$pod.metadata.name}}{{printf "\n"}}{{end}}{{end}}{{end}}'


I had to re-write it like this to make it so it would work on 3.5 and 3.6:

oadm --config /etc/origin/node/system:node:${node_name}.kubeconfig \
    manage-node  --list-pods $node_name \
    -o go-template='{{if .Items}}{{range $index, $pod := .Items}}{{range .Status.ContainerStatuses}}{{if and (not .State.Terminated) .ContainerID}}{{.ContainerID}} {{$pod.namespace}} {{$pod.name}} {{.Name}}{{printf "\n"}}{{end}}{{end}}{{end}}{{else}}{{range $index, $pod := .items}}{{range .status.containerStatuses}}{{if not .state.terminated}}{{.containerID}} {{$pod.metadata.namespace}} {{$pod.metadata.name}} {{.name}}{{printf "\n"}}{{end}}{{end}}{{end}}{{end}}'