CI: Drop alpine-3.18-rootfs-export and use test-artefacts

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

automation/gitlab-ci/build.yaml

@@ -304,17 +304,6 @@ qemu-system-aarch64-6.0.0-arm32-export:
 
 # x86_64 test artifacts
 
-alpine-3.18-rootfs-export:
-  extends: .test-jobs-artifact-common
-  image: registry.gitlab.com/xen-project/xen/tests-artifacts/alpine:3.18
-  script:
-    - mkdir binaries && cp /initrd.tar.gz binaries/initrd.tar.gz
-  artifacts:
-    paths:
-      - binaries/initrd.tar.gz
-  tags:
-    - x86_64
-
 kernel-6.1.19-export:
   extends: .test-jobs-artifact-common
   image: registry.gitlab.com/xen-project/xen/tests-artifacts/kernel:6.1.19

automation/gitlab-ci/test.yaml

@@ -11,8 +11,10 @@
   - qemu-system-aarch64-6.0.0-arm32-export
 
 .x86-64-test-needs: &x86-64-test-needs
-  - alpine-3.18-rootfs-export
   - kernel-6.1.19-export
+  - project: xen-project/hardware/test-artifacts
+    job: x86_64-rootfs-alpine-3.18
+    ref: master
 
 .qemu-arm64:
   extends: .test-jobs-common