This commit checks that the `--progress` argument generates the
expected output, i.e. with `term` we will not get any osbuild
output and the spinner. And with `verbose` we will not get a
spinner and the osbuild output.
This is a very sad commit, it copies the code to make a fake
container with a faked osbuild.
The bright side is that the plan is to rewrite these helpers
in go and then we can just have a shared testutil module that
can be imported from both bib/ibcli.
And/or the two repos will merge and its just a (simple) test
helper. But I do not feel good (at all) about this.
This commit switches the default repositories to use the build-in
ones from images PR#1112. It is still possible to override using
`/etc/image-builder` and `/usr/share/image-builder` or `--datadir`.
This is implicitly tested via the container test that no longer
includes the files from osbuild-composer in the container.
