We've changed our strategy for Flatpaks to store Flatpak metadata in traditional Docker labels rather than using OCI labels - allow though we got OCI support in registry.fedoraproject.org it's not widely available elsewhere.

We want to entirely drop support in the Flatpak client for annotations, to avoid a lot of code and user complexity - to make this work during the transition, we need Fedora Flatpaks to have both labels and annotations. The steps needed here are:

• Update the OSBS buildroot to use flatpak-module-tools 0.11.3, and an atomic-reactor release containing https://github.com/containerbuildsystem/atomic-reactor/commit/82462441161600e17d62a9c6ad81f7ee3f50279f [if updating atomic-reactor looks like it's going to be a struggle, we can do a backport]
• Add to the reactor config flatpak section 'metadata: both'

cc: @cverna @kalev