Conan revision index not updated after copy

When packages are copied/promoted from one Conan repo to another, the index (index.json of the recipe revisions) file that stores revision is not updated is updated but it removes the revision on the destination, leaving only the copied one. So those packages are not accessible nor usable until someone fires a re-index.

This now can be workarounded with an explicit REST API call, but that is something that users will only do after hitting this bug first.