Fedora 35 is going EOL on Tue 2022-12-13. At the time of writing this commit
message, that's the next day. As we do releases on Wednesdays, the next
release will never find its way to F35 and thus, there's no point in keeping
support for it.
Let's delete everything that relates to Fedora 35. If there's something that
cannot be deleted (e.g. CI containers based on F35), let's upgrade it to F37.
TestCrossArchDepsolve now uses CentOS Stream 8 because RHEL 8.4 cannot read
F37 repository metadata. This is a similar issue to
https://bugzilla.redhat.com/show_bug.cgi?id=2004853 . Basically, newer
repositories can be only read by libmodulemd >= 2.11.
Signed-off-by: Ondřej Budai <ondrej@budai.cz>
Integrate the dev container into docker compose with the aim
of making test-case generation work as well as composer-cli.
This also makes docker-compose self contained, and no setup or configuration is required beyond running `docker compose up --build`.
