5.4.4.4. 必須フィールドの追加

      versions:
      - name: v1alpha2
        schema:
          openAPIV3Schema:
            properties:
              apiVersion:
                type: string
              kind:
                type: string
              metadata:
                type: object
              spec:
                type: object
              status:
                type: object
              pollInterval:
                type: string
            type: object
            required:
            - pollInterval

validating upgrade for CRD "test.example.com" failed: CustomResourceDefinition test.example.com failed upgrade safety validation. "ChangeValidator" validation failed: version "v1alpha1", field "^": new required fields added: [pollInterval]