A new struct in ostree can be used to define configuration options for
the ostree remote of an image. So far remotes were always set up with
the remote URL used to pull the commit. Now we support setting a
different remote with extra configuration options.
This is used by the fedora-iot-raw-image to set up the remote
configuration of the final image, separately from the source of the
commit.
Test manifests updated.
1de55c73e6