Add the "latest" endpoint for the nightly manifest (#3509)

This will allow user to query (amd64):

curl -sL https://storage.googleapis.com/kubevirt-prow/devel/nightly/release/kubevirt/containerized-data-importer/latest"

For arm64, it will be:

curl -sL https://storage.googleapis.com/kubevirt-prow/devel/nightly/release/kubevirt/containerized-data-importer/latest-arm64"

and for s390:

curl -sL https://storage.googleapis.com/kubevirt-prow/devel/nightly/release/kubevirt/containerized-data-importer/latest-s390x"

That follows kubevirt/kubevirt standard

Signed-off-by: Nahshon Unna-Tsameret <[email protected]>

automation/prow_periodic_push.sh

@@ -20,6 +20,10 @@ export DOCKER_TAG="${build_date}_$(git show -s --format=%h)${ARCH_SUFFIX}"
 make manifests
 make bazel-push-images
 
-bucket_dir="kubevirt-prow/devel/nightly/release/kubevirt/containerized-data-importer/${build_date}"
+base_url="kubevirt-prow/devel/nightly/release/kubevirt/containerized-data-importer"
+bucket_dir="${base_url}/${build_date}"
 gsutil cp ./_out/manifests/release/cdi-operator.yaml gs://$bucket_dir/cdi-operator${ARCH_SUFFIX}.yaml
 gsutil cp ./_out/manifests/release/cdi-cr.yaml gs://$bucket_dir/cdi-cr${ARCH_SUFFIX}.yaml
+
+echo ${build_date} > ./_out/build_date
+gsutil cp ./_out/build_date gs://${base_url}/latest${ARCH_SUFFIX}