Add Pod Disruption Budget

apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: create-default-pdb
  annotations:
    policies.kyverno.io/title: Add Pod Disruption Budget
    policies.kyverno.io/category: Sample
    kyverno.io/kyverno-version: 1.6.2
    policies.kyverno.io/minversion: 1.6.0
    policies.kyverno.io/subject: Deployment
    policies.kyverno.io/description: A PodDisruptionBudget limits the number of Pods of a replicated application that are down simultaneously from voluntary disruptions. For example, a quorum-based application would like to ensure that the number of replicas running is never brought below the number needed for a quorum. As an application owner, you can create a PodDisruptionBudget (PDB) for each application. This policy will create a PDB resource whenever a new Deployment is created.
spec:
  rules:
    - name: create-default-pdb
      match:
        any:
          - resources:
              kinds:
                - Deployment
      generate:
        apiVersion: policy/v1
        kind: PodDisruptionBudget
        name: "{{request.object.metadata.name}}-default-pdb"
        namespace: "{{request.object.metadata.namespace}}"
        data:
          spec:
            minAvailable: 1
            selector: "{{request.object.spec.selector}}"