disable openapi schema format validation

[eguzki]

As per the OAS: https://spec.openapis.org/oas/v3.0.0#data-types

the format property is an open string-valued property, and can have any value. Formats such as "email", "uuid", and so on, MAY be used even though undefined by this specification.

The following openapi Doc schema is not successfully validated:

parameters:
   - name: customer_uuid
          in: query
          description: Unique customer identifier to be used for experience customization.
          schema:
            type: string
            format: uuid

The error from the operator:

spec.openapiRef.secretRef: Invalid value: v1.ObjectReference{Kind:"",
        Namespace:"3scale-cand-3", Name:"uberoas3", UID:"", APIVersion:"",
        ResourceVersion:"", FieldPath:""}: invalid paths: parameter
        "customer_uuid" schema is invalid: Unsupported 'format' value 'uuid'

Issue: https://issues.redhat.com/browse/THREESCALE-7642

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[KevFan]

Changes looks good to me 👍