Comment 1 for bug 1903055

Looks like this could be easily reproduced by creating a Job in the kube-system namespace.

Seems like "Completed" should be added as an acceptable state here: https://github.com/charmed-kubernetes/charm-kubernetes-master/blob/93883d785a5e6394e2de133bc52164aa74695fd5/reactive/kubernetes_master.py#L2473-L2477