Kubetools

- Add ability to provide a custom script to check the presence of the image on the target registry
- Re-work checking for CronJob API version compatibility against the target k8s cluster
- Fix crash where we could try to delete `default` namespace, which is forbidden by k8s
- Fix crash where we tried to delete a namespace that doesn't exist
- Fix crash trying to gather annotations from k8s resource that can't have any

- Fix default registry option to not override registry for images specified
directly, so they keep using the docker server default registry (dockerhub)

- No functional change, this is just validating the change of CI to Github Actions

DO NOT USE: This has a bug fixed in v13.9.6
- Allow adding a default registry in command line instead of
specifying the registry in kubetools.yml file.

- Added support job time to live

- Add support for CronJob api version `batch/v1beta1`