Always create a relation from the Pod's parent to the Pod, even when the pod is not running yet.
Always create a relation from the Pod's parent to the Pod, even when the pod
is not running yet.

The Pod's parent could be the Node which runs it (most common case)
or the Cluster (when the pod is not running).

Closes #99.

EranGabber/cluster-insight,rimey/cluster-insight,google/cluster-insight,EranGabber/cluster-insight,rimey/cluster-insight,rimey/cluster-insight,google/cluster-insight,EranGabber/cluster-insight