Port osbuild/images v0.33.0 with dot-notation to composer

Update the osbuild/images to the version which introduces "dot notation"
for distro release versions.

 - Replace all uses of distroregistry by distrofactory.
 - Delete local version of reporegistry and use the one from the
   osbuild/images.
 - Weldr: unify `createWeldrAPI()` and `createWeldrAPI2()` into a single
   `createTestWeldrAPI()` function`.
 - store/fixture: rework fixtures to allow overriding the host distro
   name and host architecture name. A cleanup function to restore the
   host distro and arch names is always part of the fixture struct.
 - Delete `distro_mock` package, since it is no longer used.
 - Bump the required version of osbuild to 98, because the OSCAP
   customization is using the 'compress_results' stage option, which is
   not available in older versions of osbuild.

Signed-off-by: Tomáš Hozza <thozza@redhat.com>

vendor/github.com/osbuild/images/pkg/manifest/commit.go

@@ -16,14 +16,13 @@ type OSTreeCommit struct {
 // NewOSTreeCommit creates a new OSTree commit pipeline. The
 // treePipeline is the tree representing the content of the commit.
 // ref is the ref to create the commit under.
-func NewOSTreeCommit(buildPipeline *Build, treePipeline *OS, ref string) *OSTreeCommit {
+func NewOSTreeCommit(buildPipeline Build, treePipeline *OS, ref string) *OSTreeCommit {
 	p := &OSTreeCommit{
-		Base:         NewBase(treePipeline.Manifest(), "ostree-commit", buildPipeline),
+		Base:         NewBase("ostree-commit", buildPipeline),
 		treePipeline: treePipeline,
 		ref:          ref,
 	}
 	buildPipeline.addDependent(p)
-	treePipeline.Manifest().addPipeline(p)
 	return p
 }