feat: basic status and reconcile implementation

[olevski]

@sgaist

I did a few changes from your version that was just merged:

• moved the methods that generate the children in their own file separate from the CRD spec
• used the controllerutil library to simplify reconciliation
• removed the status condition changes - I am not quite sure how to handle these yet and I did not want to have them in the main reconcile function
• moved a the reconcile code to separate methods so that the top most reconcile loop code is shorter
• added PVCs
• implemented hibernation

A few things that are still missing, that I will do in a followup PR:

• the ready/total containers on the pod in the status are still missing
• the ingress is still optional and the url in the status gets generated incorrectly

[olevski]

@sgaist I spent half the day trying to figure out why the owner references were failing in the tests. So I went back to what you had before and what I made you change. We should have kept that since it is what the k8s docs recommend. My bad about that.

With the SetControllerReference (as you had it earlier) things do not fail. They way I proposed was fragile because sometimes the kind/apiversion can be empty and the SetControllerReference handles this gracefully.