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/containers/storage/OWNERS

@@ -0,0 +1,32 @@
+approvers:
+  - Luap99
+  - TomSweeneyRedHat
+  - cevich
+  - edsantiago
+  - flouthoc
+  - giuseppe
+  - haircommander
+  - kolyshkin
+  - mrunalp
+  - mtrmac
+  - nalind
+  - rhatdan
+  - saschagrunert
+  - umohnani8
+  - vrothberg
+reviewers:
+  - Luap99
+  - TomSweeneyRedHat
+  - cevich
+  - edsantiago
+  - flouthoc
+  - giuseppe
+  - haircommander
+  - kolyshkin
+  - mrunalp
+  - mtrmac
+  - nalind
+  - rhatdan
+  - saschagrunert
+  - umohnani8
+  - vrothberg