Add custom rule example- verify key doesn't exist

[adifayer]

DOD
Add an example of a custom rule that verifies a certain key-value is not used within a manifest

Example:

  properties:
    kind:
      enum:
        - Deployment
        - Pod
        - DaemonSet
        - StatefulSet
        - ReplicaSet
        - CronJob
        - Job
then:
  properties:
    spec:
      properties:
        template:
          properties:
            containers:
              type: array
              items:
                not:
                type: object
                properties:
                  env:
                  type: array
                required:
                - env```

[hadar-co]

@adifay I dont understand the example you put here - is it supposed to be the schema of such a rule?

[adifayer]

@hadar-co exactly