Feature: Export and Import of existing releases #417

To be able to help migrating legacy releases from one k8s to a different k8s I would like to be able to export a running release directly and import the result to a differen k8s.

I already managed to do that using

helm get manifest $ReleaseName -n $Namespace

and

kubectl get secret -n $Namespace -l "owner=helm,name=$ReleaseName" -o yaml

and then using

kubectl apply -f $secretsFile -n $Namespace

and

kubectl apply -f $manifestFile -n $Namespace

to apply it.

However this is missing the whole hook system. So if a dependency had a hook which creates more k8s resources these would not be included.

I would think it would be valuable addition to the helm toolkit to be able to export and import releases as they are.

Any thoughts on that?