Make the output of kubectl.sh narrower

The output of ``kubectl.sh get`` now uses a separate line for each image which makes the output narrower but longer. Example:

```
$ kubectl.sh get pods
NAME                           IMAGE(S)                       HOST                                                           LABELS                      STATUS
influx-grafana                 kubernetes/heapster_influxdb   kubernetes-minion-3.c.kubernetes-elk.internal/146.148.76.82    name=influxdb               Running
                               kubernetes/heapster_grafana                                                                                               
                               dockerfile/elasticsearch                                                                                                  
heapster                       kubernetes/heapster            kubernetes-minion-1.c.kubernetes-elk.internal/130.211.126.68   name=heapster               Running
synthetic-logger-0.25lps-pod   ubuntu:14.04                   kubernetes-minion-1.c.kubernetes-elk.internal/130.211.126.68   name=synth-logging-source   Running
elasticsearch-pod              dockerfile/elasticsearch       kubernetes-minion-2.c.kubernetes-elk.internal/23.236.59.213    app=elasticsearch           Running
kibana-pod                     kubernetes/kibana:latest       kubernetes-minion-4.c.kubernetes-elk.internal/130.211.121.21   app=kibana-viewer           Running
synthetic-logger-10lps-pod     ubuntu:14.04                   kubernetes-minion-1.c.kubernetes-elk.internal/130.211.126.68   name=synth-logging-source   Running
```