Add `before-hook-creation` deletion to jobs
We have a hook deletion policy for the post-install hooks in this chart that's
hook-succeeded. This is good, because it cleans up the succeeded hooks, but some hooks are still lingering around when Nextcloud gets re-installed. If we change the annotation to
hook-succeeded,before-hook-creation (maybe not comma but only space separated) the hook should also be deleted when we try to re-install nextcloud, which should prevent one of the errors we run into when reinstalling nextcloud.