Job list doesn't include K8S nodes data

[maximlt]

By passing k8s=True to calls to ae5_user_session.deployment_list(...) and ae5_user_session.session_list(...) we can see on which node deployments or sessions are running. If possible, it'd be nice to get the same information for jobs. Currently ae5_user_session.job_list doesn't accept any k8s parameter.

This feature request is motivated by holoviz/lumen#249 where we want to add to the AE5 source of Lumen a table of resource allocations, that indicate how much sessions, deployments and jobs resources are allocated vs the total resources available.

cc @philippjfr