Change dnf-yum to yum in Fedora package sets

In Fedora, there is no 'dnf-yum' package. dnf-yum is provided
by yum (which is a subpackage of dnf, confused yet?)

With the dnf5-replacing-dnf transition, dnf5 includes the file
/usr/bin/yum and provides and obsoletes 'yum', but it does not
provide 'dnf-yum'. In a test of a Kiwi image build using a config
which specified 'dnf-yum', this caused a failure, because dnf
wanted to pull in 'yum' to satisfy the 'dnf-yum' specification,
but it was obsoleted by dnf5 (which it was pulling in as the
provider of 'dnf'), so it gave up. I suspect we'd have the same
problem with osbuild builds that specify 'dnf-yum'. I think
changing it to just 'yum' will solve the problem while remaining
compatible across Fedora releases before and after the dnf5
switchover, because in earlier releases, this will pull in the
'yum' package as before, and in later releases, dnf should decide
that the 'dnf5' package provides both it and 'dnf', and be happy
installing that.

Signed-off-by: Adam Williamson <[email protected]>

pkg/distro/fedora/package_sets.go

@@ -582,7 +582,7 @@ func containerPackageSet(t *imageType) rpmmd.PackageSet {
 		Include: []string{
 			"bash",
 			"coreutils",
-			"dnf-yum",
+			"yum",
 			"dnf",
 			"fedora-release-container",
 			"glibc-minimal-langpack",