Define VPA as single app with components

[mikkeloscar]

We labelled the vpa "backwards" when we introduced it. This means we have 3 apps defined in our application registry, when we only need one.

Change all components to have application: vpa application: vertical-pod-autoscaler and a custom component label.

To roll this out in a "safe" way I added pre-apply delete for all components. For updater and recommender this is ok to happen all the time, for admission-controller I renamed it to have -new suffix which I will rename later with another PR once this is all rolled out.

[hjacobs]

vertical-pod-autoscaler might be a better application ID --- more meaningful and less confusing (other colleagues should not have to guess when they see "vpa")

[mikkeloscar]

@hjacobs good point. I have changed it.

[mikkeloscar]

👍

[hjacobs]

👍