fix: Accept completed job for log command

[jerr]

Small change to accept pod in Succeeded phase.
Attempt to fix #61

The trace pod is completed

$ kubectl get pod kubectl-trace-43db844d-3ae6-11e9-8802-9cb6d0de1923-bkrwj 
NAME                                                       READY   STATUS      RESTARTS   AGE
kubectl-trace-43db844d-3ae6-11e9-8802-9cb6d0de1923-bkrwj   0/1     Completed   0          12m

Let's try to view the output

$ kubectl trace log 43db844d-3ae6-11e9-8802-9cb6d0de1923
kubelet: /sys/fs/cgroup/blkio/kubepods/blkio.throttle.io_serviced
kubelet: /sys/fs/cgroup/memory/kubepods/memory.stat
redis-server: /proc/1/stat
^C
first SIGINT received, now if your program had maps and did not free them it should print them out

The output is displayed. 🙂

[fntlnz]

Oh good catch @jerr !

[fntlnz]

LGTM 🥇