Support purging of jobs when using rd jobs load

[rubda]

We use rd jobs load --file some-file.yaml -F yaml to load jobs into our Rundeck instance. Our file some-file.yaml is the single source of truth for our jobs, which means when we delete a job in that file we would like to reflect the same change in our Rundeck instance.

With the current CLI this is not possible to do with rd jobs load as it does not have e.g. a --purge option. So ideally I would like to be able to run something like this rd jobs load --purge --file some-file.yaml -F yaml which would delete jobs that are not present in some-file.yaml anymore.

So this issue is basically an enhancement request to support --purge for rd jobs load to support the scenario I mentioned above.