gitlab-ci/lava: Add needs: for container image to test jobs

Without this, the test jobs could spuriously run after the container
job failed or was cancelled, even if the build job didn't run at all.

Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>

.gitlab-ci/lava-gitlab-ci.yml

@@ -180,7 +180,9 @@ lava-build:arm64:
 panfrost-t760-test:armhf:
   image: $CI_REGISTRY_IMAGE/debian/$LAVA_DEBIAN_VERSION:armhf-$LAVA_IMAGE_TAG
   extends: .lava-test
-  needs: ["lava-build:armhf"]
+  needs:
+    - lava-container:armhf
+    - lava-build:armhf
   dependencies:
     - lava-build:armhf
   tags:
@@ -189,7 +191,9 @@ panfrost-t760-test:armhf:
 panfrost-t860-test:arm64:
   image: $CI_REGISTRY_IMAGE/debian/$LAVA_DEBIAN_VERSION:arm64-$LAVA_IMAGE_TAG
   extends: .lava-test
-  needs: ["lava-build:arm64"]
+  needs:
+    - lava-container:arm64
+    - lava-build:arm64
   dependencies:
     - lava-build:arm64
   tags: