Configurable vod directory per application, with backward compat - #7958

@burak-58 I understand that in principle we minimize changes to the rest API and keep things backward compatible, but in this particular case I see no way to keep this method here. The work is about to eliminate the concept of linked vod directories, so it has to be reflected in the API - any if we keep a backward compatible "ok"-ish response, that can cause more harm to customers than removing it. We need to increment the minor version in our semver to express the incompatibility and by removing the actual method, we make sure that it cannot go unnoticed on user end after an upgrade.