Add support for ostree-push 1.0

This adds a new configuration option, OSTREE_PUSH_IS_LEGACY_VERSION, which, when enabled, skips the manual rebase steps and pushes to a different port (where a compatible ostree-receive is available).

Additionally, it adds the UPLOAD_PORT option in order to support the needed alternative ssh port. (This only works with the new ostree-push, which uses a new URI syntax.)

https://phabricator.apertis.org/T8427

Signed-off-by: Ryan Gonzalez ryan.gonzalez@collabora.com

Draft because it depends on a service that doesn't exist which depends on a docker image that doesn't exist which depends on a package update that doesn't exist which depends on a v2024dev0 branch that doesn't exist. Yet.