feat: Implement missing fields in Get

[jerr]

Add Status and age fields in the table printed out on a kubectl trace get

Attempt to fix #34

Example of use:

$ kubectl trace get
NAMESPACE	NODE		NAME							STATUS		AGE	
default		kind-worker2	kubectl-trace-f2db30bc-3c3e-11e9-a337-9cb6d0de1923	Running		27s	
default		kind-worker1	kubectl-trace-f4dbd43e-3c3e-11e9-8c3c-9cb6d0de1923	Completed	24s	

Here we have two traces, one running and the other completed.

We can also add other fields such as duration but I am not sure that it is very useful.

[ghost]

Found some fixes!

P.S. share your ideas, feedbacks or issues with us at https://github.com/fixmie/feedback (this message will be removed after the beta stage).

[fntlnz]

LGTM, nice! 😮

[fntlnz]

Thanks for doing this @jerr !