Add missing F34 and F35 image test cases

Add F34 and F35 image test cases for all remaining image types, which
were previously not tested. With this PR, image test cases are now
generated for all image types on all architectures as supported by the
Fedora distro definition.

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

tools/test-case-generators/format-request-map.json

@@ -224,6 +224,17 @@
     "no-image-info": true,
     "overrides": {}
   },
+  "oci": {
+    "compose-request": {
+      "distro": "",
+      "arch": "",
+      "image-type": "oci",
+      "repositories": [],
+      "filename": "disk.qcow2",
+      "blueprint": {}
+    },
+    "overrides": {}
+  },
   "qcow2": {
     "compose-request": {
       "distro": "",