Node commissioning tasks status messages should be part of 'clusterctl node c < >'

[rkharya]

Currently we need to do status on clusterm.service to know about various commissioning tasks status. which is kind of inconvenient. When we run 'ansible-playbook' we do get the status message as it progresses. We need a similar way of displaying commissioning tasks status.

Thanks.

[mapuri]

Addressed by #117

clusterctl job get active can now be used to see the status and logs of a running job.

clusterctl job get last can be used to see the status and logs of last completed job.