The "build-assets-${arch}" jobs need to have access to the secrets in
order to log into the container registry in the cases where
"push-to-registry", which is used to push the builder containers to
quay.io, is set to "yes".
Now that "build-assets-${arch}" pass the secrets down, we need to log
into the container registry in the "build-kata-static-tarball-${arch}"
files, in case "push-to-registry" is set to "yes".
Fixes: #6899
Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>