distro/rhel9: add the edge-ami image type based on edgeRawImage

Creates the 'edge-ami' image type based on edgeRawImage, which generates
a raw image (x86_64, aarch64) ready to upload to AWS EC2.

This 'edge-ami' image type has Ignition support.

Signed-off-by: Irene Diez <idiez@redhat.com>

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

@@ -866,6 +866,22 @@
       "blueprint": {}
     },
     "overrides": {}
+  },
+    "edge-ami": {
+    "compose-request": {
+      "distro": "",
+      "arch": "",
+      "image-type": "edge-ami",
+      "repositories": [],
+      "filename": "image.raw",
+      "ostree": {
+        "ref": "test/edge",
+        "url": "http://edge.example.com/repo",
+        "parent": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
+      },
+      "blueprint": {}
+    },
+    "overrides": {}
   },
   "oci": {
     "compose-request": {