CronJob is in batch/v1beta1 not batch/v1

[edwardgeorge]

Modifies k8s_types.rs to have CronJob under version v1beta1 instead of v1.

Fixes #32

CronJob in k8s_types.rs is defined as under the v1 batch api, but it does not exist in this version. It exists under v1beta1 and is not in v1.

This has the effect that if you specify .with_child(k8s_types::batch::v1::CronJob, ...) on your operator config then you get no events at all being processed, the operator appears to hang and do nothing. (which may perhaps be a separate bug?)

This operator config now processes events as expected:

    let operator_config = OperatorConfig::new(OPERATOR_NAME, PARENT_TYPE)
        .with_child(k8s_types::batch::v1beta1::CronJob, ChildConfig::replace());

[psFried]

Thanks a lot for fixing this!