e2e: Use fully qualified image name for ubuntu:22.04

CRI-O 1.34+ enforces short name mode by default, which refuses
to pull images with unqualified names like 'ubuntu:22.04' because they
are ambiguous.

Use the full image docker.io/library/ubuntu:22.04

Fixes #1471

Signed-off-by: Ram Lavi <ralavi@redhat.com>

e2e/templates/dra-integration.yml.j2

@@ -40,7 +40,7 @@ metadata:
 spec:
   containers:
   - name: ctr0
-    image: ubuntu:22.04
+    image: docker.io/library/ubuntu:22.04
     command: ["bash", "-c"]
     args: ["export; sleep 9999"]
     resources: