Updated kinds annotation to be lower case

[garethahealy]

What is this PR About?

Konstraint now expects the kind annotation to be lowercase.

How do we test this?

Check the generated constraint.yaml includes the kinds key. i.e.:

apiVersion: constraints.gatekeeper.sh/v1beta1
kind: ContainerVolumemountInconsistentPath
metadata:
  name: containervolumemountinconsistentpath
spec:
  match:
    kinds:
    - apiGroups:
      - apps.openshift.io
      - apps
      kinds:
      - DeploymentConfig
      - DaemonSet
      - Deployment
      - StatefulSet

cc: @redhat-cop/rego-policies

[redhat-cop-ci-bot]

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This pull-request has been approved by: garethahealy

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[ckavili]

/lgtm