Doesnt catch invalid `env` indentation

[allenhartwig]

The following spec passes kubeval but fails kubectl apply with the error "ValidationError(CronJob.spec.jobTemplate.spec.template.spec): unknown field "env" in io.k8s.api.core.v1.PodSpec" as the env spec doesn't have the right indentation.

apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: my-cron
spec:
  schedule: "0 2 * * *"
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: my-cron
            image: my-image:latest
            command: ["...]
          env:
          - name: VAR
            value: test

[garethr]

You should be able to trigger the error by passing the --strict flag. Realising I need to update the documentation with details of that option.

The reason for this is the above YAML is valid for the API, in that it happily accepts additional properties. However kubectl doesn't.